Rewrite the following sentence

EXERCISE VII: Rewrite the following sent
 7/ There are industrial factories inside the city, that's why pollution can't be reduced
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 8/ Everything on the earth grows well because the sun awlays shines.
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 9/ There is a grammer error in this English composition, that's why it can't get a full mark.
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 10/ I don't have a typewrtier. I can't type it myself.
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 11/ I'll buy a new hat. I'll give it to you.
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 12/ You'll ask the teacher. He'll explain the lesson to you.
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 13/ Mary doesn't see the sight. She can't tell you about that.
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