They happened to__________ for Tianjin when we got there.
2023-04-24
[单选] They happened to__________ for Tianjin when we got there.
A . leave
B . have left
C . leaving
D . had left
参考答案:B
参考解析:
happen to后接动词原形,所以先排除C、D,而不定式表示的动作发生于过去,故选B。
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