_____ of the population in China ____ hardly to say.A. A number , isB. The number ,areC. The number , is
Lucy knew nothing about it ___________ her sister told her.
— Can I get you a cup of tea? — ___________ .
How long did it take you _____ the classroom yesterday.
Can she go to the basketball game? No, she's not .She is busy with her work.
That was a game. We were all at it.