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According to Frank's doctor, he is very heavy. He ______ on a diet. (must be go / must goes / must going / must go)
must go
That movie is really exciting. I think you'll like it. You_____ it. (should see / must see / have to see / has to see)
should see
Excuse me. This is a no smoking area. You______ here. (don't have to smoke / must not smoke / doesn't have to smoke / don't smoke)
must not smoke
Don't worry, Timmy. You _______ the dishes. I'll do them myself. (must not wash / shouldn't be wash / don't have to wash / don't wash)
don't have to wash
Exercise is good for you. Everybody_____. (must exercise / should exercise / has to exercise / have to exercise)
should exercise
Little Lisa is upset because she______ do her homework before she can watch TV. (have to / has to / should / can)
has to
I'm sick. According to my doctor, I _______ go to work today. (should / don't / can / shouldn't)
shouldn't
Too much caffeine is bad for you. You______ drink too much coffee. (can't / must not / don't have to / shouldn't)
shouldn't
Estela_______ today, so she's going to play tennis. (hasn't to work / don't have to work / shouldn't work / doesn't have to work)
doesn't have to work
This is beautiful. In my opinion, you________. (have to buy it / must buy it / should buy it / has to buy it)
should buy it
Peter is a businessman. He_________ often for his job. (have to traveling / has to traveled / has be travel / has to travel)
has to travel
Name two modal verbs that express ability.
can - could
Name two modal verbs that express possibility.
may - might
Name two modal verbs that express advice.
should - ought to
Name two modal verbs that express necessity.
need to - don't have to
Make a polite question using a modal verb based on the picture.
May I go to out?
