Rewrite the following sentences so that their meaning stays the same, using the words given

Rewrite the following sentences so that their meaning stays the same, using the words given.
 

1.Uncle Tom used to smoke. He seems to be in bad health. (because)

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2. Mark repaired the roof. The rain wouldn't come in. (so that)

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3. You have to wear warm clothes. You won’t catch a cold. ( in order to)

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4. There was a cow on the street. All the cars stopped. (because)                                                        

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5. If you don’t start working now, you won’t be able to pass your exam.  (unless)                                     

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