She should buy a new house. She needs something bigger. / She ________ to buy a new house. She needs something bigger.
ought
Is it necessary to use that teapot? Can't you just put a teabag in a mug? / Do you _______ to use that teapot? Can't you just put a teabag in a mug?
have / need
It's really dangerous to drive when you're taking these tablets. / You _________ drive when you're taking these tablets. It's really dangerous.
mustn't
You ought to be more careful. You've made ten spelling mistakes. / You _______ be so careless. You've made ten spelling mistakes.
shouldn't
You can borrow the car whenever you want. You needn't ask for permission. / You can borrow the car whenever you want. You don't ________ to ask for permission.
have / need
It would be a good idea to book a table for Saturday night. / You ______ book a table for Saturday night.
should
You should eat less fast food. It's not good for you. / You ________ to eat so much fast food. It's not good for you.
oughtn't
I must remember to buy more paper napkins. We don't have any left. / I _______ forget to buy more paper napkins. We don't have any left.
mustn't
We got a takeaway last night so we didn't need to cook. / We got a takeaway last night so we didn't _____ to cook.
have
It's not necessary to send us your CV.Just fill in the form online. / You _______ send us your CV.Just fill in the form online.
needn't
It's not a good idea to take a photo here without a flash. / You _______ use flash to take a photo here.
should
You need a visa to visit India. You'll have to apply for one. / You ______ have a visa to visit India. You'll have to apply for one.
must
My cousin _____ never find clothes that she likes.
can
Will I ____________ change these batteries if they're the wrong type?
be able to
I ______________ do my homework last night. It was too difficult.
couldn't / wasn't able to
Daniel _______ speak French very well - nobody understands a word he says!
can't
