His sister left home in 1998, and ________ since. [ ]A. had not been heard o
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| His sister left home in 1998, and ________ since. |
| [ ] |
A. had not been heard of
B. has not been heard of
C. had not heard of
D. has not heard of |
答案
| B |
举一反三
| All the preparations for the task________, and we’re ready to start. |
| [ ] |
A. completed
B. complete
C. have been completed
D. had been completed |
| If Newton lived today， he would be surprised by what ________ in science and technology. |
| [ ] |
A．had discovered
B．had been discovered
C．has discovered
D．has been discovered |
— Will you attend the meeting this afternoon?
— But I ________ told anything about it. |
| [ ] |
A. wasn"t
B. am not
C. haven"t been
D. won"t be |
| As we all know, the 2012 Olympic Games _____ in London, which is an ancient city. |
A. are to hold
B. will hold
C. are to be held
D. are held |
| In a room above the store, where a party ____ some workers are busily setting the table. |
A. is to hold
B. has been held
C. will be held
D. is being held |
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