题目内容
| The machine ______ in a dry and cool place. |
A. must kept B. must keep C. must be kept D. must be keep |
试题答案
C
相关题目
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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B. must keep
C. must be kept
D. must be keep
The machine ________ in a dry and cool place.
[
]|
A ．must kept |
B ．must keep |
|
C ．must be kept |
D ．must be keep |