Choose the correct options

1. Mary
   [is watching|watches|doesn't watch]
   a film at the cinema now.
2. Max
   [wants|is wanting|want]
   to be a spaceman one day.
3. Everest is
   [highest|the highest|higher]
   mountain in the world.
4. Do emus
   [have|has|are having]
   a breeding season in spring?
5. You
   [must|mustn't|have to]
   bring pets to school. It's prohibited.
6. Children
   [have to|can't|don't have to]
   go to school on Sundays. It is a day off.
7. It
   [never|always|sometimes]
   snows in the desert.
8. Sam
   [doesn't walk|isn't walking|walks]
   to school every day, he uses the metro.
9. My duty at home is to take
   [out|in|off]
   the rubbish.
10. The match
    [start|starts|is starting]
    at 6 p.m. today.
11. I
    [can't|mustn't|have to]
    talk to you now, I am busy.
12. Sandy's house is bigger
    [of|from|than]
    John's.
13. You look tired, you
    [should|shouldn't|has to]
    go to the doctor.
14. Don't step
    [on|off|in]
    the pavement unless you are sure it is safe.
15. Betrayal is one of
    [the best|the worst|worse]
    things in life.