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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1.Pollution (increase) will increase if we (use) use more oil and coal
2 The climate (change) will change if more trees (die) die.
3.If we (try) try to control pollution, it (be) will be expensive
5.If we (not control ) don't control pollution soon, it (be) will be too late.
6.If you need any more money i will lend you some.(you some)
7.You can go if you want to.
8. If the weather if fine tomorrow we will go for a picnic
9. Just ask me if you need any help
10. If anyone phones for me while i am out tell them i'll be back at 4 o'clock
11. go to bed now if you are tired