Edward, you play so well. But I ______ you played the piano. 
#5038
A
didn’t know
B
hadn’t known
C
don’t know
D
haven’t known
推荐题目
John Smith, a successful businessman, has a ______car. 
#4927
A
large German white
B
large white German
C
white large German
D
German large white
 You will see this product made in this factory ______ wherever you go.
#4573
A
to be advertised
B
advertise
C
advertised
D
advertising