Why don’t you buy the bike, Mary— It’s too expensive. I can’t it.

My calculations were based on the ________ that houseprices would remain steady.

Why can she keep such a good figure–She ________ great importance to regular exercise.

He lives on ________ floor in thatbuilding.

Has Mary come back yet?— Yes. She has got many books from her elder schoolmates, and the number ___ 1000.