Smoking, which may be ________ pleasure for some people, is ________ serious source of discomfort for their fellows．

A．/; a

B．a; a

C．a;/

D．a; the

Young people who have got jobs may realize university lessons can’t be the only preparation for all of the situations ________ appear in the working world．

A．where

B．when

C．that

D．what

－We all had a lot of fun at the barbecue yesterday．Pity you weren’t there．

－I really should have gone with you but I ________ on some remaining problems．

A．worked

B．was working

C．would work

D．would have worked

－I can’t get on well with some of my classmates．They just leave me in the cold．

－________ But what’s the reason?

A．Sorry to hear that．

B．How about that?

C．Don’t mention it．

D．Never give up!

I don’t think that your lecture ________ the audience, for they appeared quite puzzled．

A．got across to

B．got close to

C．got away with

D．got along with

－Can I use the telephone on the table, sir?

－Under no circumstances ________ to use the telephone in the office for personal affairs．

A．anyone is allowed

B．nobody is allowed

C．is anyone allowed

D．is nobody allowed

－He didn’t feel a bit nervous when ________．

－No．He’d had a lot of time ________ for it after all．

A．interviewing; to prepare

B．interviewed; to prepare

C．interviewing; preparing

D．being interviewed; preparing

How long do you think ________ the computer company launches a new model?

A．it will be before

B．will it be until

C．will it be when

D．it will be that

Miss Li ________ as a secretary for five years in the company, and now she is general manager of it．

A．serves

B．served

C．had served

D．has served

A warm thought suddenly came to me ________ I might substitute the hero to buy some flowers for his mother’s 60th birthday．

A．if

B．when

C．that

D．which