The ball is _____ the chair. 
A. inB. under C. in
How many English books do you have? _________
A. I have 9.B. I can see 10.C. Yes, I do.
Are they in the door? _______
A. No, they aren't. B. No, it isn't.C. Yes, they aren’t.
Where is your mother ? _______
A Yes, he is.B. She is at home.C. He is in the kitchen
Is Chen Jie in the bedroom? _______
A. Yes, it isn't. B. No, he's in the kitchen.C. Yes, she is.