2. 外语
  3. Before we left the room the chairman made sure______the lights were turned off.

Before we left the room the chairman made sure______the lights were turned off.

admin2016-08-30  18
问题 Before we left the room the chairman made sure______the lights were turned off.
选项 A、if
B、which
C、when
D、that
答案D
解析 本题考查连词的用法。make sure后接宾语从句时，引导词一般用that，that可省略。
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成人本科学位英语

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