问题补充:
A number of books in the library been stolen so that the number of them smaller than before.
A. have , is
B. has , is
C. has , are
D. have, are
答案:
A. have , is
B. has , is
C. has , are
D. have, are
解析:考查主谓一致。A number of许多大量(修饰可数名词复数形式);谓语动词用复数。The number of指…的数量;谓语动词用单数。句意:图书馆里的很多书都被偷走了,以至于书得数量比以前少了很多。故A正确。