I forgot your phone number so I ____ call you yesterday.
couldn't
What is on that sign? I _____ see it very well.
can't
You _____ go now; you can stay a bit longer.
don't have to
Visitors to the zoo _____ feed the animals.
mustn't
This is a non-smoking area, so you ____ smoke here.
mustn't
Ask me 1 "have to" question.
Do you have to walk your dog every day?
Ask 2 "have to" questions about my friend.
1. Does your friend have to read every day? 2. Does your friend have to go to school on holidays?
Ask 1 "have to" question about my family
Do your parents have to go to work every day?
