Đặt các động từ ở dạng chính xác:
1. Mary (watch)............................. TV at 9 o'clock yesterday.
2. John (play).............................. soccer while I (swim)..............................
3. The light (go out) ................................ while we (have)................................. dinner.
4. Don't forget (turn off)................................... the lights before (go).................................. out.
5. We were hungry, so I suggested (have) ................................... dinner early.
6. Nga told Hoa how (get)................................. there.
7. Mr Thanh (teach)................................... in this school since 1998.
8. Tram father (buy).................................... her a new bike two weeks ago.
9. ................................ you (do).............................. your homework yet?
10. Yes, I (already/do)...................................... it.