Task II. Circle the correct answer. 1) Where is Jake? He ... be out with his friends, but I'm not sure.
a) can't b) may c) must
2) You ... drive carefully in bad weather.
a) should b) may c) can't
4) You ... use a mobile phone during the lesson.
a) must b) may c) may not
5) I... see a dentist. I have a terrible toothache.
a) has to b) may c) can't