The traffic law requires ______ all taxi drivers and passengers to wear seat belts.

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问题 The traffic law requires ______ all taxi drivers and passengers to wear seat belts.

选项 A、to
B、/
C、for
D、in

答案B

解析 结构识别require是及物动词,常用require sth. /doing;require sb. to do sth. 例:The floor requires washing. 地板该洗了。I require two children to help me. 我需要两个孩子来帮我的忙。它还常用于:be required to do something,例:All passengers are required to show their tickets.所有乘客都必须出示车票。
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