They _____ the work before nine o"clock last night. [ ]A. has finished B.

题型：同步题难度：来源：

They _____ the work before nine o"clock last night. [ ]
A. has finished
B. had finished
C. would finish
D. had finish

答案

举一反三

They _       _ the work before nine o"clock last night.           [     ]
A. has finished
B. had finished
C. would finish

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He told me that he his key at home. [ ]
A. had left
B. left
C. had forgotten

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By the time he was eighteen, he _________ three foreign languages.[     ]
A. learn
B. learned
C. has learned
D. had learned

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The play _______ for 10 minutes when we arrived at the theater.   [     ]
A. had begun
B. has been on
C. had been on
D. began

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When I got home, my parents _____ for about an hour.[     ]
A. has got back
B. has gone back
C. had come back
D. had been back

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