I. Chọn dạng đúng của động từ trong ngoặc ở thì quá khứ tiếp diễn.
1. Julie (sleep) at three o'clock.
2. You (study) at three o'clock.
3. Mrs Brown (not/ walk) in the garden when the murder happened.
4. Mr Black (not/ work) in his study when the murder happened.
5. We (travel) to London at three o’clock.
6. You (not/ play) cards when the murder happened.
7. Dr Ford (not/ read) in his room when the murder happened.
8. We (watch) TV at three o’clock.
9. The maid (not/ clean) the bedrooms when the murder happened.
10. He (use) the internet at three o’clock.