--Monitor?

   --- I’m not monitor of our class. I __ with the teacher until the monitor is elected.

         A. will just help                                                     B. am just to help    

C. am just helping                                                 D. have just helped

 

【答案】

C

【解析】略

 

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Title: Computers and Eyestrain

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Room

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     a computer screen.          your eyes for a moment.

Look at something at a distance.

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