Wethink

问题详情：

We think ________ is our duty to make our country a better place.

A．it                                   B．this

C．that                                 D．one

【回答】

解析：题干中________ is our duty to make our country a better place为省略了引导词that的宾语从句，it在从句中作形式主语，真正的主语为后置的不定式短语to make our country a better place。

*：A

知识点：代词

题型：选择题