－Look at the man in the classroom! Is he Mr．White?

－No, it ________ be him．He's eating in the dining hall．

A．can't

B．mustn't

C．may not

D．needn't

At present, the students in China take more exercise．Most of them are ________ than before．

A．strong

B．stronger

C．strongest

D．the strongest

Jack will have a math test this afternoon．He needs a ________．

A．hat

B．ruler

C．radio

D．camera

You are old enough to make decisions by ________．

A．himself

B．herself

C．yourself

D．myself

There is ________ backpack on the desk．It belongs to Tom．

A．a

B．an

C．the

D．/

According to the latest reports on TV and in the newspaper, food safety is becoming a ________ serious worldwide problem．

A．more and more

B．little by little

C．now and then

D．one by one

Drugs can do great harm(危害)not only to you but also to your family．You must be ________them．

A．along with

B．out of

C．in front of

D．away from

－You're supposed to hand in the travel diary as soon as possible．

－I see．I'm going to ________until 11∶30 pm once more．

A．cheer up

B．put up

C．turn up

D．stay up

－It has been written into law that drink driving can be a crime(罪)．

－I quite agree．We should better be careful not to ________the law．

A．test

B．cheat

C．break

D．deal

－I can't even afford to buy a small house．

－Me neither．The house price still keeps________!

A．moving

B．rising

C．dropping

D．adding