I ________ wear a uniform to my school. (obligation)
can
should
have to
could
In summer, there is no school. So I ________ wake up early in the morning. (no obligation, optional)
shouldn't
mustn't
can't
don't have to
My sister ________ draw pictures like an artist. She is very good. (ability)
can
I ________ play tennis. It's too difficult for me. (inability)
can't/ cannot
I think you ________ watch this film, because it's very good. (advice, recommendation)
should
shouldn't
can't
could
You __________ park your car here. It's prohibited.
doesn't have to
don't have to
can't
shouldn't
You _______ run in corridors at school. (prohibition)
mustn't/ can't
He _______ eat too much chocolate. It's not good for his teeth. (negative advice)
shouldn't
I _____ speak a little Chinese when I was 5 years old, but now I can't. (ability in the past)
can't
could
can
should
I _____ speak English 5 years ago, but now I can. (inability in the past)
mustn't
wouldn't
can't
couldn't
You _______ have good behaviour in class. (obligation)
must/ have to
They ______ cook very well. (ability)
can
I ________ buy this t-shirt. It's too expensive. (inability)
can't
