The library needs ＿＿ but it will have to wait until SundayA. cleaningB. to cleanC. cle

问题补充：

The library needs ＿＿, but it will have to wait until Sunday．

A. cleaning

B. to clean

C. clean

D. being cleaned

答案：

(答案→)A. cleaning

B. to clean

C. clean

D. being cleaned

解析：need后接动名词作宾语，常以主动形式来表示被动意义。