The young man used to _______ to work,buthe is used to _______to work now.

It is impossible for _____ little children to do _____ much work within 20 minutes.

She had just finished her homework hermother asked her to practice playing the piano yesterday.

Mr Green is a kind man.He ________ most of his moneyto charity.

Scientists will have to come_______ new methods of increasing the world’s food supply