－You should be ________ careful when you take the chemistry exam．

－I agree．In this way, I will make ________ mistakes．

A．more; less

B．more; more

C．more; fewer

D．less; fewer

－John．Father is not feeling well．

－I know．A doctor has been sent ________．But he hasn't turned ________ yet．

A．for; up

B．out’ up

C．for; on

D．out; on

－There is ________ interesting book on the teacher's desk．

－Oh, ________ book is Wei Fang's．

A．an; the

B．the; the

C．the; a

D．a; the

－Have you received an e-mail message from Helen?

－________．You see, no news is good news．

A．Yes, I have

B．I don't know

C．No, I haven't

D．Sure

－How about buying an iPhone 4s for your mother's birthday?

－Oh, maybe it's too expensive, Dad．Do you know ________ ?

A．how much does it cost

B．how much it costs

C．how much it cost

D．how much did it cost

－When ________ you ________ to learn to ride your bike?

－I really can't remember the time．

A．do; begin

B．did; begin

C．have; begun

D．had; begun

－Can I go to the movie, Mum?

－Certainly．But you ________ be back by ten o’clock．

A．can

B．may

C．might

D．must

－________ do you play sports?

－Every day．I want to keep healthy．

A．How often

B．How far

C．How long

D．How soon

－Did you get your report card today, Susan?

－Yes, I did．I didn't do well in science．Because it's too ________．

A．interesting

B．difficult

C．funny

D．easy

－Lin Shuhao, ________ NBA player, became a basketball hero．

－Yeah, this is a great story of success．

A．an

B．a

C．the

D．/