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题目
27) The construction of the laboratory ____by the end of next month.
A) must be completed
B) must have been completed
C) will be completing
D) will have been completing

提问时间:2021-03-24

答案
The construction of the laboratory _B___by the end of next month.A) must be completedB) must have been completedC) will be completingD) will have been completing ----"by end of +将来时间",动词用“将来...
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