当前位置:在线题库搜索>[单选题]ack _________ in the street when I ____ on him. ( )的答案是什么?

问题:

[单选题]ack _________ in the street when I ____ on him. ( )

A、walked … called
B、was walking … was calling
C、walked … was calling
D、was walking … called

参考答案: D