11.It’s important ( ) the piano well A.of him to play B.for him to play C.of him playing

11.It’s important ( ) the piano well A.of him to play B.for him to play C.of him playing
11.It’s important ( ) the piano well
A.of him to play
B.for him to play
C.of him playing
D.for him playing
12.Smoking is bad for your health ,you’d better ( )
A.give it up
B.take it out
C.giving it up
D.look it up
13.Yesterday he was busy ( ) for the math test
A.studied
B.studies
C.study
D.studying
14 I’m too tured .Let’s stop () a rest
A.have
B.will have
C.having
D.to have
15.Our teacher made Tom () the text after school
A.write
B.writes
C.wrote
D.would write
16.There are so many kinds of MP4 players in the shop（）
I can’t decide
A.what to buy
B.which to buy
C.how to buy
D.when to buy
17..At school our teachers do all they can () us with our lessons
A.help
B.helping
C.to help
D.helped
18.--- Could you please ( ) such a thing again --- I’m sorry ,I wont
A.not to do
B.not do
C.don’t do
D.not doing
.
19.() come and join us
A.Why don’t
B.Would you like
C.Why not
D.What about
20.--- What about going to the store ( ) some fruit ------ That souds good
A.buying
B.buy
C.to buy
D.is buying
21.--- Would you please ( ) the window It’s too cold outside
---- OK,I’ll do it right away
A.to close
B.will close
C.close
D.not open