He goes to school by bus, but __________ after school.
— Are these your books? —No, they aren't. They're____. A. her B. his C. mine
—Is he your father, Kate? —Yes,_____. A. he's B. he is C. she is
Those boys are my ______. A. brothers B. brother C. sisters
—What's your QQ number? —______ 54863. A. It B. It's C. Its
—How your father? — He fine. Thank you. A. are; is B. is; are C. is; is