You should make __________your house or flat is secure.选项:a、sureb、certainc、understandingd、 knowledge

分类: 作业答案 • 2021-12-20 03:38:41

问题描述：

You should make __________your house or flat is secure.
选项:
a、sure
b、certain
c、understanding
d、 knowledge

答

A
make sure (that)+从句,确保...