—At lunch time I’d like to have a chat with you.

— ________. Have what with me?

　　 A. I apologize.　 　　 B. Pardon?　　　　

　　 C. I see.　　　　　　 D. Forgive me.

The time he has devoted in the past years _______ the disable is now considered ________ of great value.

A. to help; being      B. to helping; to be　　 C. to help; to be      D. helping; being

— Why do you look so upset?　

— There are so many troublesome problems ______ .

　 A. remaining settled　　 B. remained settled　

C. remaining to be settled　　　 D. remained to be settled

So funny _______ that everybody burst out laughing.

A. she looked    B. was she looking   C. did she look    D. had she looked

There are five pairs, but I'm at a loss which _____ to buy.?

A. to be chosen　 B. to choose from? C. to choose　 D. for choosing

—Did you tell him the truth?

　　—Of course not. I’m not ____ foolish.

　　A. that B. such C. as D. a

—We should stop here since we have been walking for hours.

—________ I’m a little tired.

A．I beg your pardon? 　 B．What do you mean?

C．Sorry，I’m not sure. D．You are right.

We forgave his bad temper because we knew that his son's illness had put him under great _____.

　　A. emotion　　 B. excitement 　　　C. crisis 　　　D. stress

The medicine works more effectively ______ you drink some hot water after taking it.

　 A. as　　　　　　 B. until　　　　　　 C. although　　　　 D. if

_______the latest estimates，insects account for probably 4 to 6 million of the species of creatures living on the planet.

A．Owing to 　　　B．According to　　　　 C．In spite of 　　　D．In case of