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【题目】Every morning John gets up, fixes breakfast for his children, and makes sure ______ they get to school on time.

A.it B.that C.if D.how

【答案】B

【解析】句意:每天早上约翰起床,为他的孩子们准备早餐,确保他们准时到学校。有了make sure(确保),自然不能用if,后面是个句子,根据句意,意思完整,不缺成分,故应该用that。

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