选择题:(1分)Helen ________ her keys in the office so she h

题目内容:
(1分)Helen ________ her keys in the office so she had to wait until her husband________ home.

A. has left; comes
B. left; had come
C. had left; came
D. had left; would come
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-When can we come to visit you?-Anytime you feel like _______.(本题4.0分)A、 oneB、 i

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DS3水准仪水准器的分划线间隔为()(A)3mm(B)5mm(C)2mm(D)6mm

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