--- Who helped you clean the classroom yesterday? --- _______. I cleaned it all by myself.
—______ are the pants? —Oh, the black pants? They are only ten dollars.
I don’t think he tried his best to learn English, ___________?
He spends as much time as he can ___________English every day.
Excuse me, is there ___________in today’s newspaper ?
Lucy knew nothing about it ___________her sister told her.