.—How much ____ the pair of shoes?—Twenty dollars ____ enough
问题描述：
.—How much ____ the pair of shoes?—Twenty dollars ____ enough
A.is; is B.is; are
C.are; is D.are; are
为什么要选这个答案
答
A ( 第一空的主语是PAIR 是单数,故用IS ,第二空的主语是金钱,也作单数）