题目内容
When the traffic lights are red, we _________ stop.
- A.should
- B.might
- C.must
- D.may
C
交通灯是我们必须要遵守的要求和命令,表示此概念的是must,故选C。
交通灯是我们必须要遵守的要求和命令,表示此概念的是must,故选C。
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