Each of the following sentences has one mistake. Identify and correct the mistakes

Each of the following sentences has one mistake. Identify and correct the mistakes.
1. He is the tallest of the two boys.
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2. I have been waiting for two hours, but she not come yet.
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3. How height is the Petronas Twin Towers ?
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4. In the free time, Hoa often listens to music, goes fishing and play video games.
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5. She reads all the works of Dickens. How many have you read ?
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