He had little idea that it was getting so serious, __________?

A. didn’t he        B. did he                    C. wasn’t it          D. was it

 —___________ makes her different from the other students?

—Diligence, I think.

A. How is it that     B. How is that              C. What is it that      D. What is that

 The news came as quite a shock to us, but he seemed to be_________ surprised.

A. simply        B. entirely             C. absolutely           D. hardly

 Not until I went through his paper _________ what rapid progress he had made in writing.

  A. I did find         B. did I find               C. I had found     D. was I found

 The days when he was_________ his best is already a thing of the past.

  A. in              B. on                  C. at              D. with

 It is everybody’s desire that every effort___________ to reduce the pollution in our city.

A. was made       B. be made              C. will be made         D. would be made

 —I did not know you were good friends.

  —You__________. I have known her since she moved here. You were abroad then.

  A. may have      B. needn’t have            C. couldn’t have       D. must have

 Winters in ______ north of China are for_____ most part dry and cold.

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

 —Can I take a week’s holiday, Sir?

—_________; we are too busy at present.

  A. Don’t worry       B. Don’t mention it        C. Forget it            D. No problem