单项选择题

I hope they ______ this road by the time we come back next summer.

A. have repaired

B. will repair
C. are to repair

D. will have repaired
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单项选择题
Though the horses got off with a good start, it was not long______ most of them were out of the race.
A. before
B. after
C. when
D. until
单项选择题
Owing to space research, TV pictures can be transmitted ______.
A. live
B. alive
C. living
D. lively
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