题目内容：

He got up early,___,he still missed the train because of the heavy traffic Ahowever Bwhatever Cwhen
He got up early,___,he still missed the train because of the heavy traffic
Ahowever Bwhatever Cwhenever

优质解答

A
他起得很早,然而,他还是因为拥挤的交通而错过了火车
这里需要一个转折词,所以是however