I think ______ doing lots of listening practice helps a lot.

题目

I think ______ doing lots of listening practice helps a lot.
A.that
B.this
C.it
请问选哪个?

答案

选A
I think that doing lots of listening practice helps a lot.
空后面已经是一个完整的句子,所以选that,引导一个宾语从句.