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You said that the current shortage of water in some provinces would end soon, ______?

       A. would it     B. wouldn’t it D. did you      D. didn’t you

Tom,you and I could hardly work out the mathematic problem, _______?

   A. could you       B. couldn’t I                  C. couldn’t we             D. could we

Measures must be taken before there is another collapse of the coal mine, ______?

A. must they            B. mustn’t they          C. is there                D. isn’t there

The news that they failed their driving test discouraged him, _________?

A. did they                     B. didn’t they                   C. did it                       D. didn’t it

Most of the students have hardly ever been to the Grand Canyon, __      ?

       A. haven’t they      B. have they   C. aren’t they        D. are they

You and I could hardly work together, _____?

       A. could you         B. couldn’t I                C. couldn’t we             D. could we

---Peter,  you set down the result of the experiment,       ?

   ---Oh, yes, but I need to find my pen first.

       A．will you   B．shall you   C．don’t you  D．do you

—Doesn’t this bus go to the Children’s Palace, sir?

 —_________

       John isn’t a diligent student, for it is the third time he has been late, ______________?

       A. isn’t he                    B. hasn’t he                         C. is it                   D. isn’t it

– Susan speaks Japanese well because she once lived in Tokyo.

   – Really? How long _______ there?

  A. does she stay                B. is she staying                C. has she stayed          D. did she stay