1. If it (rain) , we (change) our plan . .....................................................................................................................
2. The air (be) cleaner if they (go) to work by bike .
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3. If pollution (increase) , more and more trees (die ) .
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4. If she ( work ) harder , things (go) well .
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5.If you (not do) your homework , I (not let ) you watch TV . ....................................................................................................................
6. We (save) a lot of paper if we (use) tree leaves to wrap food .
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7. Alex (be) late if he ( not hurry) up .
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8. If we (not lend ) them our tools , they (work) with their hands .
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9. How long it (take) if we (get) there by ship ?
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10. How we (get) there if the train (be) delayed ?
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11.I (go) to university if I (be) awarded the scholarship .
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