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There are mistakes in the following sentence.
Find the mistakes and each sentence

1 That has to be Harry, he always comes at 10 am.______
2 I might not to come to the club tomorrow because I have to go to the doctor._____
3 I don t think we should buy him this tie. He mustn t like the colour._____
4 This information must to be useful._____
5 My brother have to walk the dog. It is his chore._______
6 Have your parents to check your howework diary.______