问题

Edward, you play so wellBut I ________ you played the piano

A:didn’t know
B:hadn’t known
C:don’t know
D:haven’t known

正确答案是：

同类题型

I was never _________ to receive a _________ result from my science teacher.

ng the bell ringing, out .

The old man wants to see the great changes in our country, and I am sure he will ________

It has been announced that the dispute will be ____________ through negotiation