1.　　　 There were some bands in the city last year. (改为否定句)

There _________ __________ band in the city last year.

10.　 They __________ (visit) Turfan last summer and they _________(enjoy) the grapes there.

9.　　　 They ________ (give) a concert last night.

8.　　　 I __________ (watch) the children go home just now.

7.　　　 They __________ (buy) a computer the day before yesterday.

6.　　　 Mr. Wang ___________ (fly) to Japan two days ago.

5.　　　 His father ___________ (find) work in Beijing last week.

4.　　　 They _________ (live) in Shanghai for five years.

3.　　　 Last year she _________ (invent) a memory robot.

2.　　　 I _________ (call) you an hour ago, but you ________ (be) not in hotel.