George is not here. What’s the matter with him-Her father is ill in hospital. She has to_____ him.

Scientists have shown that there is a connection ____ cigarette smoking and certain diseases

May I put my bicycle here?– YesBut you should always keep it ________, in case it is stolen

Don’t worry. He’ll come and help you.—_______he doesn’t come

This is the house in _______ I was born thirty years ago.