1. I can't drive and play the piano, but I can swim.
2. I can read books, do my homework, play video games and watch different movies in the evening.
3. I can buy bread, sugar and meat in any grocery store.
4. I can learn ten new words every day.
5. I must attend all lectures on mathematics.
6. We must show the documents to our director.
7. You may use my telephone.
8. My sister should accompany me to the party.
9. I have to stay in bed when I am ill.
10. I have to hurry to the station because I don't have to be late for work.