Fill in the gaps with the proper modal verbs (must, may, can, need, to have to, to be able to). 1. You___ always pay the bills on time.
2. John ... not tell us the rules of the game, he did not know them.
3. ... you help me now? — I am afraid not: I am in a great hurry. I’ll be free in the evening. Come to my place at about eight, and I ... help you.
4. Students ... take the test yesterday, it was obligatory.
5. ... I return the book to you tomorrow?