6. may i ask you? …… you phone jane tonight? a. shall b. have c. will d. must 7. i …… do my homework last night because i was too tired. a. cannot b. mustn’t c. may not d. couldn’t 8. einstein …… speak 8 foreign languages. a. could b. can c. must d. may 9. life is short. we …… waste it. a. should b. shouldn’t c. must d. can 10. you …… have passport if you want to travel abroad. a. should b. can c. must d. may