The machine ______ in a dry and cool place.

A. must kept
B. must keep
C. must be kept
D. must be keep
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科目：初中英語 來源：模擬題 題型：單選題

The machine ______ in a dry and cool place.
[     ]
A. must kept
B. must keep
C. must be kept
D. must be keep

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科目：初中英語 來源： 題型：014

The machine ________ in a dry and cool place.

[　　]

A．must kept

B．must keep

C．must be kept

D．must be keep

查看答案和解析>>


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