单项选择题
Once the problem of the engine
, all other problems will be readily solved.
A.solve
B.solved
C.is solved
D.will be solved
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单项选择题
If I had remembered the window, the thief would not have got in.
A.to close
B.closing
C.to have closed
D.having closed
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单项选择题
If you a moment, I'll ask the manager to talk with you about the recent developments of the factory.
A.waited
B.are waiting
C.wait
D.have waited
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