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If water is heated to 100oC, it________to steam.

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Unless you __________all of my questions, I can’t do anything to help you.

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If she ____ the truth, I think she’d never want to see you again.

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If you ________ enough sleep, you ________ a headache.

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She acted as if she _________ him before.

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_____ the boat leaves on time, we will arrive in Paris by the morning.

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Were he ten years younger, he _____ part in the voyage around the world.

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Do you think there would be less conflict in the world if all people ______ thesame language?

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George won't lend you and money_____ you promise to pay him back.  

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I would have crashed the car _____.

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If the tree hadn't been so high, he _____ it up to take his kite down.

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If I __________the same problem you had as a child, I might not have succeededin life as well as you have.

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I   ____ the police unless you ______

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If I________money, I________a new uniform.

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It was much colder than we had thought. _____ we had taken more warm clothes.

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If he________exercises, he________play soccer.