Question

       All the buildings look old but the library _________.

A．need to be repaired

B．needs repairing

C．needs be repaired

D．need repairing

Answer 1

B

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。