There is no doubt that___ the mother is most concerned about is the health of her children.

分类: 作业答案 • 2022-01-09 18:04:27

问题描述：

There is no doubt that___ the mother is most concerned about is the health of her children.
A.that
B.what
C./
D.whether

答

B.what
what the mother is most concerned about他妈妈最关注的,做宾语