"Whose T-shirt is this?" "It_____ be John's. It's much too small for him.”A. might B. can't C. needn't
What a nice day! You should go sightseeing ___________ watching TV at home.
You’ll ___________ swim when summer comes.
I saw Sam __________ football when I passed the playground.
There is so much rubbish.Could you ____________?
He used to _______ up late, now he is used to __________ up early.