We all consider _____ significant that we should cancel the order immediately.

A. how                         B. which                                C. this                           D. it

A qualified doctor has to constantly update his knowledge in order to maintain his professional _____.

A. conscience            B. competence                    C. conservation          D. convenience

– Amazing! You _____ have won the first prize in the national English speech contest!

– I’m lucky that all my efforts have finally paid off.  

A. must          B. may                    C. can           D. should

I was caught in a traffic jam for over an hour, otherwise I ________ you waiting for such a long time.

A. will not keep     B. have not kept      C. had not kept    D. would not have kept 

 – How did you make contact with the travel agent, Tom？

– Oh, that’s easy. I surfed the Internet and then called one _____ the telephone number is provided.

A. that                          B. in which                     C. of which       D. whose

 ----- Did you tell the policeman that accident?

----- Hardly ________ him the detail of it when he hung up.

A. I told             B. had I told        C. I had told      D. did I tell

 Don't sigh over the small achievement.  _____ , and I'm sure if you keep at it, you'll see the light at the end of the tunnel!

A. Lookers-on see most of the game         

B. Constant dropping wears away the stone

C. The world is your oyster                                   

D. Lost time is never found again

— What do you think we should do after dinner?

— Why don't we get _______ beer at the Karaoke bar down the street? It is kind of _______

fun to hear all the band singing．

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