—Dad, must I become a doctor like you when I finish university in the future?
—No, you________. You can make your own decision and do whatever you like.
don’t have to
can’t
mustn’t
couldn’t
_____ the help of the policeman, I found my lost wallet.
I want to buy a story book in the bookshop, but there are ___________ in it.
— Is Jim coming by train? —I’m not sure. He_____ drive his car.
— ________ is your school like? —It's very beautiful.
— Could you please tell me something about Hong Kong Disneyland, please? — With pleasure. It ___ an area of 129 hectare, _____ four different parks.