Zhang Lin was addicted to computer games during his last year in high school , otherwise he ____________a student of Beijing University .
I really appreciate ________ to drive me home, but I’m afraid I have to finish my work first.
Having been married for over 10 years, the couple ____ finally because they quarreled a lot.
I borrowed several books from the library, ________ are about English study.
Most of us value our time, but some of us treat it ________ it had no value at all.
I can’t pretend ________ happy when I am not.