Use the verbs can and must in the correct forms:


1            ... you tell me the way to the airport? 2. My English is very bad. I ... have some lessons to write a test. 3. It’s my day off, so I ... get up as early as usual. 4. The boy fell into the river but fortunately we ... rescue him. 5. Children ... be left home alone. 6. ... you really introduce me to him? 7. She ... cook dinner yesterday. 8. He ... do it very well 10 years ago, he ... do it now and he ... do it in ten years, I’m sure. 9. You ... type the report yourself, your secretary ... do it for you. 10. We tried hard but we ... persuade him. 11. You ... touch that switch, it’s dangerous.