diff --git a/Composer/packages/lib/code-editor/src/BaseEditor.tsx b/Composer/packages/lib/code-editor/src/BaseEditor.tsx
index 85fcb7c1aa..4ec24df036 100644
--- a/Composer/packages/lib/code-editor/src/BaseEditor.tsx
+++ b/Composer/packages/lib/code-editor/src/BaseEditor.tsx
@@ -31,6 +31,7 @@ const defaultOptions = {
   folding: false,
   renderLineHighlight: 'none',
   formatOnType: true,
+  fixedOverflowWidgets: true,
 };
 
 const styles = {
diff --git a/Composer/packages/tools/language-servers/language-generation/src/LGServer.ts b/Composer/packages/tools/language-servers/language-generation/src/LGServer.ts
index cedb22bfd7..fc12cca6dd 100644
--- a/Composer/packages/tools/language-servers/language-generation/src/LGServer.ts
+++ b/Composer/packages/tools/language-servers/language-generation/src/LGServer.ts
@@ -35,6 +35,7 @@ import {
   updateTemplate,
   cardTypes,
   cardPropDict,
+  cardPropPossibleValueType,
 } from './utils';
 
 // define init methods call from client
@@ -344,7 +345,8 @@ export class LGServer {
     const position = params.position;
     const range = Range.create(0, 0, position.line, position.character);
     const lines = document.getText(range).split('\n');
-    let lastLine = '';
+    const keyValueRegex = /.+=.+/;
+    let cardName = '';
     for (const line of lines) {
       if (line.trim().startsWith('#')) {
         state.push(TEMPLATENAME);
@@ -352,14 +354,53 @@ export class LGServer {
         state.push(TEMPLATEBODY);
       } else if ((state[state.length - 1] === TEMPLATENAME || templateId) && line.trim().startsWith('[')) {
         state.push(STRUCTURELG);
-        lastLine = line;
-      } else if (state[state.length - 1] === STRUCTURELG && line.trim() === '') {
-        return lastLine.trim().substring(1);
+        cardName = line.trim().substring(1);
+      } else if (state[state.length - 1] === STRUCTURELG && (line.trim() === '' || keyValueRegex.test(line))) {
+        state.push(STRUCTURELG);
       } else {
         state.push(ROOT);
       }
     }
 
+    if (state[state.length - 1] === STRUCTURELG) {
+      return cardName;
+    }
+
+    return undefined;
+  }
+
+  private findLastStructureLGProps(
+    params: TextDocumentPositionParams,
+    templateId: string | undefined
+  ): string[] | undefined {
+    const state: LGCursorState[] = [];
+    const document = this.documents.get(params.textDocument.uri);
+    if (!document) return;
+    const position = params.position;
+    const range = Range.create(0, 0, position.line, position.character);
+    const lines = document.getText(range).split('\n');
+    const keyValueRegex = /.+=.+/;
+    let props: string[] = [];
+    for (const line of lines) {
+      if (line.trim().startsWith('#')) {
+        state.push(TEMPLATENAME);
+      } else if (line.trim().startsWith('-')) {
+        state.push(TEMPLATEBODY);
+      } else if ((state[state.length - 1] === TEMPLATENAME || templateId) && line.trim().startsWith('[')) {
+        state.push(STRUCTURELG);
+        props = [];
+      } else if (state[state.length - 1] === STRUCTURELG && (line.trim() === '' || keyValueRegex.test(line))) {
+        state.push(STRUCTURELG);
+        props.push(line.split('=')[0].trim());
+      } else {
+        state.push(ROOT);
+      }
+    }
+
+    if (state[state.length - 1] === STRUCTURELG) {
+      return props;
+    }
+
     return undefined;
   }
 
@@ -504,6 +545,7 @@ export class LGServer {
     const lgDoc = this.getLGDocument(document);
     const lgFile = lgDoc?.index();
     const templateId = lgDoc?.templateId;
+    const lines = document.getText(range).split('\n');
     if (!lgFile) {
       return Promise.resolve(null);
     }
@@ -552,59 +594,55 @@ export class LGServer {
     }
 
     const cardType = this.matchCardTypeState(params, templateId);
+    const propsList = this.findLastStructureLGProps(params, templateId);
+    const cardNameRegex = /^\s*\[[\w]+/;
+    const lastLine = lines[lines.length - 2];
+    const paddingIndent = cardNameRegex.test(lastLine) ? '\t' : '';
+    const normalCardTypes = ['CardAction', 'Suggestions', 'Attachment'];
     if (cardType && cardTypes.includes(cardType)) {
-      let item: CompletionItem | undefined = undefined;
-      if (cardType === 'CardAction') {
-        let insertStr = '';
-        insertStr = cardPropDict[cardType].map(u => `\t${u} = `).join('\r\n');
-        item = {
-          label: `Properties for ${cardType}`,
-          kind: CompletionItemKind.Keyword,
-          insertText: insertStr,
-          documentation: `Suggested properties for Card: ${cardType}`,
-        };
-      } else if (cardType === 'Suggestions') {
-        let insertStr = '';
-        insertStr = cardPropDict[cardType].map(u => `\t${u} = `).join('\r\n');
-        item = {
-          label: `Properties for ${cardType}`,
-          kind: CompletionItemKind.Keyword,
-          insertText: insertStr,
-          documentation: `Suggested properties for Card: ${cardType}`,
-        };
-      } else if (cardType === 'Attachment') {
-        let insertStr = '';
-        insertStr = cardPropDict[cardType].map(u => `\t${u} = `).join('\r\n');
-        item = {
-          label: `Properties for ${cardType}`,
-          kind: CompletionItemKind.Keyword,
-          insertText: insertStr,
-          documentation: `Suggested properties for Card: ${cardType}`,
-        };
+      const items: CompletionItem[] = [];
+      if (normalCardTypes.includes(cardType)) {
+        cardPropDict[cardType].forEach(u => {
+          if (!propsList?.includes(u)) {
+            const item = {
+              label: `${u}: ${cardPropPossibleValueType[u]}`,
+              kind: CompletionItemKind.Snippet,
+              insertText: `${paddingIndent}${u} = ${cardPropPossibleValueType[u]}`,
+              documentation: `Suggested propertiy ${u} in ${cardType}`,
+            };
+            items.push(item);
+          }
+        });
       } else if (cardType.endsWith('Card')) {
-        let insertStr = '';
-        insertStr = cardPropDict.Cards.map(u => `\t${u} = `).join('\r\n');
-        item = {
-          label: `Properties for ${cardType}`,
-          kind: CompletionItemKind.Keyword,
-          insertText: insertStr,
-          documentation: `Suggested properties for Card: ${cardType}`,
-        };
+        cardPropDict.Cards.forEach(u => {
+          if (!propsList?.includes(u)) {
+            const item = {
+              label: `${u}: ${cardPropPossibleValueType[u]}`,
+              kind: CompletionItemKind.Snippet,
+              insertText: `${paddingIndent}${u} = ${cardPropPossibleValueType[u]}`,
+              documentation: `Suggested propertiy ${u} in ${cardType}`,
+            };
+            items.push(item);
+          }
+        });
       } else {
-        let insertStr = '';
-        insertStr = cardPropDict.Others.map(u => `\t${u} = `).join('\r\n');
-        item = {
-          label: `Properties for ${cardType}`,
-          kind: CompletionItemKind.Keyword,
-          insertText: insertStr,
-          documentation: `Suggested properties for Card: ${cardType}`,
-        };
+        cardPropDict.Others.forEach(u => {
+          if (!propsList?.includes(u)) {
+            const item = {
+              label: `${u}: ${cardPropPossibleValueType[u]}`,
+              kind: CompletionItemKind.Snippet,
+              insertText: `${paddingIndent}${u} = ${cardPropPossibleValueType[u]}`,
+              documentation: `Suggested propertiy ${u} in ${cardType}`,
+            };
+            items.push(item);
+          }
+        });
       }
 
-      if (item) {
+      if (items.length > 0) {
         return Promise.resolve({
           isIncomplete: true,
-          items: [item],
+          items: items,
         });
       }
     }
@@ -639,8 +677,29 @@ export class LGServer {
     const range = Range.create(0, 0, position.line, position.character);
     const lines = document.getText(range).split('\n');
     const isInStructureLGMode = this.matchStructureLG(lines);
-    if (key === '\n' && isInStructureLGMode) {
-      const deleteRange = Range.create(position.line, 0, position.line, 4);
+    const lgDoc = this.getLGDocument(document);
+    const templateId = lgDoc?.templateId;
+    const cardType = this.matchCardTypeState(params, templateId);
+    const propsList = this.findLastStructureLGProps(params, templateId);
+    const normalCardTypes = ['CardAction', 'Suggestions', 'Attachment'];
+    let expectedPropsList: string[] = [];
+    let matchedAllProps = false;
+    if (cardType) {
+      if (normalCardTypes.includes(cardType)) {
+        expectedPropsList = cardPropDict[cardType];
+      } else if (cardType.endsWith('Card')) {
+        expectedPropsList = cardPropDict.Cards;
+      } else {
+        expectedPropsList = cardPropDict.Others;
+      }
+    }
+
+    if (expectedPropsList.length > 0 && propsList !== undefined && this.isSubList(expectedPropsList, propsList)) {
+      matchedAllProps = true;
+    }
+    if (key === '\n' && isInStructureLGMode && matchedAllProps) {
+      const length = templateId ? 4 : 2;
+      const deleteRange = Range.create(position.line, 0, position.line, length);
       const deleteItem: TextEdit = TextEdit.del(deleteRange);
       if (document.getText(deleteRange).trim() === '') {
         edits.push(deleteItem);
@@ -671,6 +730,16 @@ export class LGServer {
     return true;
   }
 
+  private isSubList(list1: string[], list2: string[]): boolean {
+    for (const item of list1) {
+      if (!list2.includes(item)) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
   protected validate(document: TextDocument): void {
     this.cleanPendingValidation(document);
     this.pendingValidationRequests.set(
diff --git a/Composer/packages/tools/language-servers/language-generation/src/utils.ts b/Composer/packages/tools/language-servers/language-generation/src/utils.ts
index 5f88ecd386..b9a79c6965 100644
--- a/Composer/packages/tools/language-servers/language-generation/src/utils.ts
+++ b/Composer/packages/tools/language-servers/language-generation/src/utils.ts
@@ -153,6 +153,20 @@ export const cardTypes = [
   'Activity',
 ];
 
+export const cardPropPossibleValueType = {
+  title: 'An Example Card',
+  type: 'Action Type',
+  value: 'Some Value',
+  SuggestionActions: 'Text | ${Some_CardAction}',
+  subtitle: 'An Example Subtitle',
+  text: 'Some text',
+  image: 'https://example.com/demo.jpg',
+  buttons: 'Text | ${Some_CardAction}',
+  contenttype: 'adaptivecard',
+  content: '${json(fromFile("../../card.json"))}',
+  name: 'An Example Name',
+};
+
 export const cardPropDict = {
   CardAction: ['title', 'type', 'value'],
   Suggestions: ['SuggestionActions'],