题目内容
10. Temperatures quite dramatically at night in mountains,so put on some warm clothes before going out.
A. are dropped B. drop
C. are being dropped D. have dropped
10. B考查动词的时态和语态。句意:山里的温度在晚上会急剧下降,所以出去前穿上暖和的衣服。此处用一般现在时, drop是不及物动词,没有被动语态。
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