66. Исправь ошибку.

1. I’ll be free in a few minutes. 2. She has a problem with mathematics. 3. I am sure he told me the truth. 4. Go straight along the street and on the right you will see the museum. 5. Shall we go by bus or on foot? 6. Can you tell me the time, please? 7. Do you play the piano or the violin? 8. She has a cold and stays in bed. 9. They live in the country at present. 10. I have been waiting here for a long time.