问题
选择题
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
need(实意) +n /to do，need (情态)+ do，当为被动语态时，need + doing.是主动形式表被动含义，选A。如有to be cleaned则也为正确答案。