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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:初中英语 来源:模拟题 题型:单选题

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:初中英语 来源: 题型:014

The machine ________ in a dry and cool place.

[  ]

Amust kept

Bmust keep

Cmust be kept

Dmust be keep

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