______(为了确保他参加会议) I called him up in advance.In order to ensure his attendance a

游客2023-07-21 59

问题 ______(为了确保他参加会议) I called him up in advance.

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答案 In order to ensure his attendance at the conference

解析本题考查目的状语和核心短语。①in order to引导目的状语，表示“为了”；②“确保某事”用ensure sth．表示；③“参加会议”attendance at the conference。

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