_____ a solution to the problem of water shortage, we have to put all our effort
题型：天津模拟题难度：来源：
| _____ a solution to the problem of water shortage, we have to put all our efforts together. |
| [ ] |
A. To work out
B. Working out
C. Work out
D. Being worked out |
答案
| A |
举一反三
| There is nothing more I can try _____ you to stay, so I wish you good luck. |
A. being persuaded
B. persuading
C. to be persuaded
D. to persuade |
| She worked deep into the night _____ a long speech for the president. |
| [ ] |
A. to prepare
B. preparing
C. prepared
D. being prepared |
| _____ the project in time, the staff were working at weekends. |
A. Competing
B. Having completed
C. To have completed
D. To complete |
| Be careful _____ to turn off the light. |
A. not forget
B. not to forget
C. forget not
D. forget to not |
| He was advised _____ up smoking, but he didn"t listen. |
A. gave
B. to give
C. kicking
D. to stop |
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