—Who is playing the piano in the classroom?—_______ must be Susan. She plays the piano after school every day.
Call Mary____ 333-6241, A. at B. to C. in
____ do you spell "photo"? A. What B. How C. Who
— 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