This is a question for pupils of the 7th class.
Вместо точек вставь CAN, MUST, CAN'T, MUSTN'T.
1. John was working for 16 hours today. He ...... be tired.
2. Helen ...... be at home. I called her 10 minutes ago and there was no answer.
3. Mary ...... play the guitar so she is taking lessons.
4. ..... I borrow your pencil, please? I've lost mine.
5. You ...... park here! It'a a "No parking" zone.
6. Jill ..... drive. She is a taxi driver.
7. You ..... be quite. The baby is sleeping.
8. We ..... wake him.