2. 外语
  3. Since this road is wet and slippery this morning, it ______ last night.

Since this road is wet and slippery this morning, it ______ last night.

admin2018-09-11  60
问题 Since this road is wet and slippery this morning, it ______ last night.
选项 A、must rain
B、was raining
C、must have rained
D、may rain
答案C
解析 本题考查情态动词+完成时的用法，表示对已经发生的亭储的肯定猜测。本句的意思是：“既然今天早晨路上又湿又滑，昨晚肯定下雨了。”
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