I don"t know whether you happen _____, but I"m going to study in the U.S.A this
题型：同步题难度：来源：
| I don"t know whether you happen _____, but I"m going to study in the U.S.A this September. |
| [ ] |
A. to be heard
B. to be hearing
C. to hear
D. to have heard |
答案
| D |
举一反三
| She seemed _____ the book before, but she said she had never. |
| [ ] |
A. to read
B. to have read
C. to be reading
D. reading |
| I would like _____ you to my birthday party, but I was busy and forgot to call you. |
| [ ] |
A. to invite
B. inviting
C. to have invited
D. having invited |
| You look like light-hearted. Nothing seems ____ to you. |
A. to happen
B. to be happened
C. to have happened
D. to have been happened |
| Andrew is said ____ a new computer programme last month, but I don"t know when he will finish it. |
| [ ] |
A. to design
B. to be designing
C. to have designed
D. to have been designing |
| Earth is believed _____ by an object the size of Mars at some point in the distant past before its surface cooled. |
A. to be hit
B. to have hit
C. to have been hit
D. to hit |
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