问题

I rang you at about nine, But there was no reply.— Oh, that was probably ______ I was seeing the doctor[ ]

A: why
B: when
C: what
D: that

正确答案是：

同类题型

You aren’ t a student , are you — _____ , don’ t you remember _____ me in the classroom ten minutes ago .

. If only I ________ how to operate an electronic computer as you do.

ng of the scenes ________ the people were killedby the invaders, the old man was full of anger.

The World Wide Webis sometimes jokingly called the World Wide Wait because it _______ be veryslow

Not only _____ a promise， but also he kept it.