题目内容
5. 他返回办公室确认他已经关掉了电脑。
He went back to his office ___________________ the computer.
5.to make sure that he had turned off
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题目内容
5. 他返回办公室确认他已经关掉了电脑。
He went back to his office ___________________ the computer.
5.to make sure that he had turned off