题目内容
At the beginning of class, the noise of desks ________ could be heard outside the classroom.
[ ]
A.
opened and closed
B.
to be opened and closed
C.
being opened and closed
D.
to open and close
答案:C
解析:
解析:
|
此题考查现在分词的被动语态,由时间状语及“could be heard”可知用现在进行时,而“desks”被(人)打开和关上,故选C项。 |
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