И последнее 10.Some people just don't know how to sing (be able to)

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1. She could be in the airport.

2. I could ride a horse.

3. John might not go to Spain.

4. You mustn't block the emergency exit.

5. You mustn't use mobile phone on the plane.

6. You must fasten your belt.

7. He may meet us.

8. You shouldn't tell anybody.