Underline the mistake and rewrite the correct one.
1.    The more complicated the puzzle gets, the long it takes to solve
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2.    The most polluted the air gets, the harder it is to breathe.
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3.    Despite the crowded streets, Tom decided to get up downtown by motorbike.
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4.    We had to cancel our trip because our dad came up with the flu.
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5.    The cleaner the kitchen is, more inviting it looks.
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6.    The crowdeder the bus is, the longer the journey takes.
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