—You’re not good at biology, are you?—______.A. Yes, I’m not.B. No, I am. C. Yes, I am.
You can’t buy all the things _______your list.
—________ shorts are they? —They are my shorts.
— Your pencil case is nice. —__________.
—Paul , please take this CD to ______ English teacher . —OK .
—________do you feel? —I feel happy.