Peter is busy _ _ at school, but he never forgets _ __ exercise every day.A. working; doing B. working; to do C. at work; doing
—What does the boy look like?—______ .
—What color _____ his shoes?—Black.
—My legs are short , ______ her legs are long.
— Does your sister ______ a new schoolbag (新书包)?— No, she doesn’t.
— ______ are you from?— I’m from Shanghai.