The library needs______, but it’ll have to wait until Sunday.

admin2009-02-15  21

问题 The library needs______, but it’ll have to wait until Sunday.

选项 A、cleaning
B、be cleaned
C、clean
D、being cleaned

答案A

解析 need(实义)+n/to do,need(情态)+do,need+ doing还可表示被动。本题是最后一种用法,选A。也可用to be cleaned。
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