Underline and correct the mistakes in the sentences.
1 I have written this essay all afternoon but I haven’t

finished it yet.

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2 This is the first time we see him in such a bad mood.

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3 You have to hurry up, the train is leaving at 5. 15.

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4 When we were children, my brother and I would be very

sad whenever our dad had to go away for a few days.

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5 Mike was walking quickly along the street when,

suddenly, he had heard steps behind him.

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