Упражнение 1. Сделайте данные предложения отрицательными. 11. You (must, can) go to bed now. 12. She (must, can) read this book. 13. He (must, can) speak English. 14. My father (must, can) drive a car. 15. Jack (can, must) play the guitar very well.

Решение:

1. You mustn't go to bed now.
2. She can't read this book.
3. He can't speak English.
4. My father can't drive a car.
5. Jack can't play the guitar very well.

Ответ: You mustn't go to bed now; She can't read this book; He can't speak English; My father can't drive a car; Jack can't play the guitar very well.