题目内容
We found ________ necessary to protect the environment.
[ ]
A.it
B.this
C.that
D.what
答案:A
提示:
提示:
it作形式宾语,代替to protect the environment。 |
练习册系列答案
相关题目
题目内容
We found ________ necessary to protect the environment.
A.it
B.this
C.that
D.what
it作形式宾语,代替to protect the environment。 |