Ai giải giúp mk câu 7 với, nhớ giải thích tại sao chọn đáp án đó nha
----- Nội dung dịch tự động từ ảnh -----
A. is working
B. has worked
C. had worked
D. was working
6. The newW course
by the 5th of next month. Try to get back on that date.
A. will start
B. will be starting
C. will have started
D. is going to start
7. There are books all over Tom's desk. He
A. studied
B. had studied
C. had been studying D. has been studying
8. Mary is a good girl. She
her mother with the housework.
A. is always helping B. always helps
C. had always helped D. was always helping
9. When your mother comes here tomorrow, I
her about your behaviour.