The coach driver looked____________the engine carefully, ____________it should go wrong on the way.

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问题 The coach driver looked____________the engine carefully, ____________it should go wrong on the way.

选项 A、down; before
B、up; otherwise
C、over; lest
D、to; in case
E、through; unless

答案C

解析 句意:长途汽车司机仔细地检查了发动机,以免它在路上出毛病。look down“俯视;向下看;用目光慑服某人;看跌”,look up“查阅;拜访”,look over“检查”,look to“指望;展望”,look through“逐一查看;阅读”。before “…之前”,otherwise“否则”,lest“以防”,in case“万一;假使”,unless“除非”。C项符合句意,故选C。
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