—I’m sorry to have kept you waiting.
—_______,Bill.
A.You’re welcome B.Go ahead
C.Don’t mention it D.No problem
I have _______ all my papers but I still can’t find my notes.
A.looked through B.looked for
C.looked after D.looked out
At the beginning of class,the noise of desks _____ could be heard outside the classrooms.
A.opened and closed B.to be opened the closed
C.being opened and closed D.to open and close
If Joe’s wife won’t go to the party,_______.
A.he will either B.neither will he
C.he neither will D.either he will
Speaking of all the songs he has written,I think this is probably his _______ one.
A.better-known B.well-known
C.best-known D.most-known
After two years’ research,we now have a _______ better understanding of the disease.
A.very B.far C.fairly D.quite
