问题补充:
The library needs , but it’ll have to wait until Sunday.
A. cleaning
B. be cleaned
C. clean
D. being cleaned
答案:
(答案→)A. cleaning
B. be cleaned
C. clean
D. being cleaned
解析:考查动名词做宾语:need 后面接动名词做宾语,表示被动含义,相当于need to be done,句意:图书馆需要打扫,但要等到星期天。选A。