（ ）1.----This physics problem is too difficult .Can you show me （）,Wang li?

（ ）1.----This physics problem is too difficult .Can you show me （）,Wang li?
---- Sure
A.what to work it out B.what to work out it
C.how to work it out D.how to work out it
()2.It is important () the piano well
A.of him to play B.for him to play
C.of him playing D.for him to playing
()3.---Sorry ,I can’t follow you .I beg your pardon
---()
A.You are welcome B.That’s all right
C.Not at all D.No problem
()4The old farmer felt like .() a big house very much
A.to get B.get C.getting D.got
()5.She () walk at night .How brave she is
A.dare to B.dares to C.dare not D.doesn’t dare to
()6.I will go to my doctor for () on healthy diet （饮食）
A.an advice B.some advices C.any advice D.some pieces of advice
()7.It’s my honor () to give a talk here
A.to invite B.to be invited .C .inviting D.invite
()8.I usually go to the movies with my parents ,but () alone
A.some times B.sometime .C.at times D.at time
()9.If you want to learn English well ,it’s useful to () before class and （）after class
A.review ; preview B.preview ; review C.review ; to preview
D.preview ; to review