_________happily the children are flying kites!
I remember ______ the window before I left but now it’s open .
She parked her car outside the window ______,but next morning she found it missing.
There’s smile on the teacher’s face. I think she’s ______ our work.
—I’m not sure ______ Bill will come or not.—No, he isn’t.
—I want to know ______ your son is.—He is ten years old.