—When did you buy this computer? It looks so new.—I it for only a couple of days. My sister bought it for me as a birthday present.
great fun it is! And good time they are having!
一Excuse me, but where’s Mrs. Liu? I want to ask her for some advice. 一Shethe library. You can find her there.
Lily’s never been to Hainan, ________ she?
Have you returned the book to him _______? Yes, I have______ returned it.
The windows after school is over.