1 The house is clean . Someone ( clean) it ? 2 You (save) a lot of trees if you (33. not waste) paper

1 The house is clean . Someone ( clean) it ?
2 You (save) a lot of trees if you (33. not waste) paper

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  1. 1.The house is clean . Someone ( clean) it ?

    ⇒ The house is clean. Did someone clean it?

    2. You (save) a lot of trees if you (not waste) paper

    ⇒You will save a lot of trees if you don’t waste paper.

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