题目内容
We all think ________our duty to help those who are weak in their studies.
[ ]
A.it
B.that
C.that is
D.of it
答案:A
解析:
解析:
|
用 it作形式宾语。 |
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题目内容
We all think ________our duty to help those who are weak in their studies.
[ ]
|
用 it作形式宾语。 |