问题

I rang you at about ten o’clock, but there was no reply. – Oh, that was probably ________ I was seeing the doctor.

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

正确答案是：

标签： about , rang , was

同类题型

Your father is sleeping now. Could you please ______ the CD player ?–OK, mum.

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_______?—I am going to visit my uncle.