—How about joining me for dinner tonight?

—________， but I'm leaving for Beijing at 8：00 tonight if everything goes well.

A．My pleasure　　　　　　B．I'd love to

C．Forgive me D．I'd rather not

Would you please ____ the paper for me and see if there are any obvious mistakes?

A. look around　 B. look into C. look up　 D. look through

We should prevent such a silly mistake _____ again.

A. occurring                B. to occur      　　　 C. to be occurred         D. from being occurred

New medicines and instruments ______ every day to extend life.

A. develop　　　　　　　　　 B. are being developed

C. are developing　　　　　 D. have developed

John waited at the bus stop for nearly an hour ___ the bus finally arrived.
A. when            　　 B. as             　　　　 C. before         　　　 D. while

The three　　　　 students are all wearing　　　　 shoes.

A. girl, sports　 B. girl, sport　 C. girls, sports D. girls, sport

—This is　　 room I told you about.

—Great. It is　　 airy one, isn’t it?

A. a;an　 B. the;an C. the;the D. a;the

If you don't sign up for the game，________.

　 A．I don’t go，either　 　　 　　　 　 B．neither will I

　 C．so will I　　　　　　　 　　　　 　 D．nor do I

Just think what our country will be like in ______ ten years.
  A. other        B. the other       C. another        D. the rest

　　　 spending our vacation in the city，why not try hiking in the courtry?

　 A．Instead of　 B．In favour of　 C．In case of 　 D．In terms of