Teenagers           their health because they play computer games too much.A.hav

Teenagers           their health because they play computer games too much.A.hav

题型:不详难度:来源:
Teenagers           their health because they play computer games too much.
A.have damagedB.are damagingC.damagedD.will damage

答案
   B
解析
  根据because引导的原因状语的时态,可知前面的时态。
举一反三
Father ____ that we four brothers try our best to help our uncle ___ everything he had done for us.
A.suggested; in return for B.hoped; in exchange for
C.wished; in terms ofD.supposed; in turn

题型:不详难度:| 查看答案
I wrote to my parents to ask for some money, because my money began to.
A.give awayB.give inC.give offD.give out

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It looks as if they were going to  us 3,000 dollars for the concert hall.
A.wantB.chargeC.demandD.cost

题型:不详难度:| 查看答案
—Oh, come on. Just ___ . I’m very busy now!
--OK. To tell the truth, I need your help with my paper.
A.take your timeB.don’t hesitate
C.come to the pointD.take your turn

题型:不详难度:| 查看答案
We tried to find a table for seven,but they were all              . 
A.given awayB.kept away
C.taken upD.used up

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