Teenage is an especially important stage for us, ______we are supposed to go all out to improve ourselves because anything can happen.
—You can’t imagine ____ fantastic fun web chatting is.—Really? But it may cause a lot of trouble sometimes.
—What did the doctor say?— He said, “________on time, this medicine will be quite effective”.
There is no excuse, ________, for hurting her feelings.
—You look so young. Haven’t you graduated from your university?—Yes, I________in the English Department of Shandong University for four years.
—Is that a book on painting? If so, I want to borrow___________—Yes, it is.