2. Сделай эти утверждения вопросительными или отрицательными.

Решение:

1. Sam invited his friends to his house. (-) Didn't Sam invite his friends to his house.
2. Peter joined his parents in London. (?) Did Peter join his parents in London?
3. They travelled in England last summer. (-) Didn't they travel in England last summer.
4. She listened to music. (?) Did she listen to music?
5. The hotel was comfortable. (?) Was the hotel comfortable?