I ......... go to see the doctor last week because I was very ill. must must to had to
I could ......... bought that car but I didn't have enough money to pay for the petrol. had have have to
I ......... go now because I am already late for my class. must had have to
I may ......... able to come to your party if I have the time. be being being to
Do you ......... clean the house every day or every week? must have have to
I ......... speak French without a problem now because I have had many lessons. may can have
They ......... do their homework today because it is a holiday at the school. must not don't have don't have to
I ......... help you with your shopping because you have a lot of bags. ought ought to thought
When will you ......... come and see us in our new house? can be able to must
I may ......... go to Paris next week because there is a very big exhibition there. have have to had
