52单词网 > 高中英语 > 高中英语题库 > I was watching TV in the room I heard a knock on the door.A.whileB.whenC.as soon

I was watching TV in the room I heard a knock on the door.A.whileB.whenC.as soon

来源:网络 时间:
I was watching TV in the room I heard a knock on the door.A.whileB.whenC.as soon

I was watching TV in the room ________ I heard a knock on the door.

A.while

B.when

C.as soon as

D.until

试题答案

B