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You _____ put some sunscreen on your skin ______ you want to prevent it from the harmful effects of the sun. 

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If you don’t want to go out tonight, you _____ stay at home to watch TV.

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You _______ at least call or send him a message to ask for his permission if you want to use his car.

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 If you ____ a choice, which country will you visit?

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Trees won’t grow _____ there is enough water.

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If I feel hungry in the afternoon, I _____ snacks like fresh carrots, a bottle of milk or a slice of bread.

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_______ you wear warm clothes, you _______ have a cold.

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You should ____ up smoking ____ you will get ill.