----- Why is Mr . Yang still in the teachers’office ?---- Maybe he _______ his work yet .
Mike is only 15 years old. He is not _____________ to get a driver’s license.
—HowmuchdidthisCD_______you,Sally? —Igotitfor5dollars.
— Why do you like Sandy? — Because he is honest boy.
-Leave the windows open. -______.
-Is Mary in the library, Tom? -No. She ______ with her friends.