题目内容
4. You (play) computer games for a long time. It is bad for your eyes.
5. I think it's hard (sell) old things.
4. have played 5. to sell
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题目内容
4. You (play) computer games for a long time. It is bad for your eyes.
5. I think it's hard (sell) old things.
4. have played 5. to sell