I think ________ vocabulary lists ________ us a lot.

问题描述:

I think ________ vocabulary lists ________ us a lot.
A.making,helps B.making,help C.make,helo D.makes,helping
哪个?为什么?

A
I think (that)making vocabulary lists helps us a lot.
这是宾语从句,省略that
动名词making vocabulary lists做从句的主语,是单数形式,从句的谓语要用单三形式.