Older people need the same amount of vitamins as younger  people although they need fewer calories,  ______ ?   

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• 1I heard that some patients who had undergone laser eye surgery experienced sudden losses of vision, ______?

  A.didn't I

  B.hadn't they

  C.didn't they

  D.isn't it

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• 2He doesn't dare to climb high, _____?

  A.dare he

  B.dares he

  C.does he

  D.do he

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• 3When you've finished with that book, don't forget to put it back on the shelf, _______?

  A.do you

  B.don't you

  C.will you

  D.won't you

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• 4You won't surf the internet before you finish your homework, ______ you?

  A.do

  B.don't

  C.will

  D.won't

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• 5-You are not a new comer,are you?    - _________. I came here only yesterday.     

  A.No,I am

  B.Yes,I am

  C.No,I'm not

  D.Yes,I'm not

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• 6-The ground is wet.    -It must have rained last night,_____?     

  A.hasn't it

  B.didn't it

  C.mustn't it

  D.isn't it

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• 7Go straight into the cave and find out what's in it, ________?

  A.can't you

  B.don't you

  C.are you

  D.will you

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• 8You used to sleep with the windows open, ________?

  A.did you

  B.do you

  C.usedn't you

  D.use you

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• 9— Daniel must have lost his job in that unemployment crisis, ____ he? — I don't think so. Yesterday I saw him working together with his colleagues.

  A.didn't

  B.doesn't

  C.mustn't

  D.hasn't

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• 10Mrs. Black doesn't believe her son is able to design a digital camera, ______?

  A.is he

  B.isn't he

  C.doesn't she

  D.does she

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