Correct the mistakes in the given sentences.

{"0": "This year I have visited some interesting places. ✔", "1": "I won two prizes when I was seven.", "2": "My brother and I have been playing football for three hours.", "3": "I’ve learnt to play the guitar this year. ✔", "4": "I have drawn a beautiful picture for my grandma today.", "5": "We haven’t finished our project yet.", "6": "My father has taught me to ride a bike. ✔", "7": "I have been playing the violin for three years.", "8": "Have you been to Scotland already? ✔", "9": "My sister has spent two weeks in Africa this year. ✔"}