_____of them was good enough to use.

_____of them was good enough to use.
A、None
B、Most
C、Not all
D、Many
【正确答案】：A
【题目解析】：None of sth．作主语时，其谓语动词都用单数。没有一个好用的。Most of them，not all of them，many of them 作主语时，其谓语动词应为复数