You'd better ____ football in the street.

House owners        keep their gardens in a neat and orderly state according to the regulations.

—Must I finish the book today?—Yes, you ________, but you ________ finish it now. Have a rest.

It ______ be the postman at the door. It’s only six o’clock.

There _____ be any difficulty in passing the road test since you have practised a lot in the driving school.