All the buildings look old but the library .
A. need to be repaired
B. needs repairing
C. needs be repaired
D. need repairing
网友回答
A. need to be repaired
(答案→)B. needs repairing
C. needs be repaired
D. need repairing
解析：主语是the library，是单数，而且need是做实义动词用，所以需要选择needs，由此可排除A、D 。Need/want /require doing =need /want/require to be done 主动表示被动含义，表达“这个图书馆需要被翻修”的意思。