题目内容

Food ________ in a cool place in summer.

A. must keep
B. mustn’t keep
C. must be kept
D. mustn’t be kept

查看答案

搜索结果不匹配？点我反馈

更多问题

How _________ this word pronounced?

A. was
B. has been
C. is
D. had been

It is impossible for lost money _________ by ourselves.

A. to be found
B. be found
C. to being found
D. being found

机器的主要作用是利用机械能做功或实现能量的转换

A. 对
B. 错

机构的主要功用在于传递或转变运动的形式。

A. 对
B. 错