I. Translate into Russian.
1. May I invite Nick to our house?
2. I can swim well.
3. If you have done your homework, you may go for a walk.
4. She must stop eating much and she must lose weight.
5. May I go to the post office with Mike?
6. May I take Pete's bag?
7.Can you help me? 
8. May we take notes with a pencil?
9. You must not cross the street when the light is red.
10. May I shut the door?
11. My sister can play the piano.
12. May I come and see you?

II. Choose the right modal verb (can, may, must)
It's a hospital. You (can’t/mustn’t)…… smoke.I (can/may)…….speak Arabic fluently when I was a child and we lived in Morocco.(Must/Can)…….you stand on your head for more than a minute? No, I (can’t/may not)… People (can’t/mustn’t)……. walk on grass.Drivers (may/must)……. stop when the traffic lights are red.(Can/May)……I ask a question? Yes, of course.(Can/May)…….you speak Italian? No, I (can’t/may not)…… .I am afraid I (can’t/mustn’t) ….. help you now.Don't stand up! – You (can’t/may not) stand up!I'd like to see your children. – (May/Must) I see your children?