There are mistakes in all the sentences.Try to find the mistake in the sentences.

1. How long time are you staying?

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2. I saw him yesterday night.

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3. I didn’t sleep very well this night.

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4.   I haven’t seen her since three weeks.

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5.When did you arrive to London?

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6. I arrived two days before.

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7.What time shall we meet us?

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8. I’m going there the next month.

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9.Before to leave we must get some souvenirs.

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10. I haven’t seen her in the last days.

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11. I’m going to the shop but I’ll back after half an hour.

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