1. He drives more carefully than his brother does ==>His brother doesn't ......... 2. He didn't study as hard as his classmates did ==>His classmates..... 3. Trung sings more beautifully than Nam does ==>Nam doesn't.......

Phương pháp làm:
- Để tìm câu trả lời cho câu hỏi, ta cần sử dụng cấu trúc so sánh hơn:
so sánh hơn với "does" (sử dụng "doesn't")
so sánh hơn với "did" (sử dụng quá khứ đơn)
- Tìm từ/cụm từ thích hợp để điền vào chỗ trống để hoàn thành câu.

Câu trả lời:
1. His brother doesn't drive as carefully as he does.
His brother doesn't drive as carefully as he does.
His brother doesn't drive as carefully as he does.
2. His classmates didn't study as hard as he did.
His classmates didn't study as hard as he did.
His classmates didn't study as hard as he did.
3. Nam doesn't sing as beautifully as Trung does.
Nam doesn't sing as beautifully as Trung does.
Nam doesn't sing as beautifully as Trung does.

3. Nam doesn't sing with as much beauty as Trung does.

3. Nam doesn't have the same level of singing skills as Trung does.

3. Nam doesn't sing as beautifully as Trung does.

2. His classmates didn't study less than he did.