4 Rewrite each sentence so that it has а similar meaning and contains the word in bold.
а) It would bе а good idea for you to see а dentist. ought
You ought to see а dentist.
b) It's not necessary for us to go to school tomorrow. have
с) I'm sure that isn't John, because he's in Paris. bе
d) Perhaps Ann is at home. bе
е) You ought to wear а warm coat today. had
f) It's possible that I'll bе late. may
g) I wouldn't go skiing if I were you. think
h) It is forbidden to leave your bike here. can't
