-Hi, Tom. Is this your dog?-No, it’s Cathy’s. _________ is at home now.
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.
—Do you have a bike? — Yes, _______! It’s my bike.