Here is ()?Are these yours.A.a set of

问题描述:

Here is ()?Are these yours.A.a set of
Here is ()?Are these yours.
A.a set of keys B.a set of keys
C.the keys D.keys
填什么 ,为什么

A.a set of keys B.a set of keys
a set of + 复数名词 做主语时,谓语用单数.如此句的is错了,A是a set ofkey那就选B