15.Our English ______ far better in a month if we try harder.( )
| A. | becomes | B. | will become | C. | has become | D. | became |
10.________important computers are to everybody in a modern city!( )
| A. | What | B. | How | C. | What an | D. | How an |
9.My cousin was born in China,but ____in Australia.( )
| A. | picked up | B. | gave up | C. | grew up | D. | took up |
8.Some questions _______at their class meeting last week.( )
| A. | raised | B. | rose | C. | were risen | D. | were raised |
7.I'm glad you've come back from the United States.Please tell me how long you ____there.( )
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| A. | have stayed | B. | had stayed | ||
| C. | have been staying | D. | stayed |