3 речення з can,3 з may,3 з must

1) May I go out? 2) He may be at work. 3) You may call me tonight. 1) You can`t do it! 2) Can I sit here? 3) If you have some free time, we can go for a walk. 1) I must go to doctor next week. 2) You mustn`t leave without permission! 3) She isn`t at school, so she must be ill.