I’m not sure if Mr. Zhang _____ . If he ______,please let me know .
—Who’s the girl _____ a white dress? —She is my Art teacher.
There are two blackboards ______the wall and two doors ____the wall.
—_______ the computer?—It’s in the sitting room..
_______your mother know this pretty girl?
They_______ in our school. They are in No.2 Middle School.