It’s important ________ the piano well. 
#70667
A
of him to play
B
for him to play
C
of him playing
D
for him playing
推荐题目
We can't work out the physics problem. Can you tell us         ?
#71032
A
how to do
B
what to do it
C
how to do it
D
what should to do
—She has never read this book, __________ she? —__________, so she knows little about it.
#68942
A
has, No, she hasn’t.
B
hasn’t, Yes, she does.
C
has, Yes, she hasn’t.
D
hasn’t, No, she does
E-mail is very popular today.  People seldom write letters now,_______?
#69806
A
did they
B
do they
C
didn't they
D
don't they