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

admin2009-05-28  45

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

选项 A、have repaired
B、will repair
C、are to repair
D、will have repaired

答案D

解析 此句中的“by”表示“在……以前”,句中又出现“next summer”表示将来,因此需用将来完成时。“will have done sth.”表示在未来某时间之前已经完成某事。
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