Fill in can, need, must or should.
6. It's top secret. You ……………. not tell anybody else
7. Rome is a wonderful city. You …………….. go there, too.
8. I watered the plants yesterday. You ……………. not water them today.
9. ……………… I offer you a seat? Yes, that's very kind of you.
10. You …………….. have a passport to visit foreign countries.