Choose the correct answer. 1) Drivers speak on the phone while driving. a) couldn't b) mustn't c) need not 2) I ask you some questions about your life? a) should b) must c) could 3) see a dentist, I have a toothache. a) ought to b) can c) might 4) Drinking a lot of alcohol. cause addiction. a) must b) couldn't c) can play with his brother than going out. b) may c) had better 5) He a) need not
b) mustn't
c) could
a) ought to
c) can
b) may