Bài 1: Khoanh tròn vào chữ cái có lỗi sai A, B, C hoặc D trong mỗi câu sau:
1. What do you do last night? I watched TV last night.
A B C D
2. He didn't went to school yesterday.
A B C D
3. I received a letter to my friend last week.
A B C D
4. I went to Ha Noi with my parents years last.
A B C D