2. 职称英语
  3. In our study of English______is necessary to practise speaking and listening.A、w

In our study of English______is necessary to practise speaking and listening.A、w

游客2025-07-23  3
问题 In our study of English______is necessary to practise speaking and listening.
选项 A、what
B、this
C、/
D、it
答案 D
解析 it在这作形式主语，代替不定式短语to practise speaking and listening．
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