21. My friend Mary is _______ beautiful girl and _______ girl that you would like to work with.
A．a; a B．the; a C．the; the D．a
22. ____ his food ____ , the man had to come out of his hiding place.
A．Since; runs out B．Because; run out
C．With; running out D．For; running out
23.he met with the difficulty did he realize the importance of our help.
A．Even though B．Never until C．Only before D．Ever since
24. —If our parents would listen more to us, they would understand us better.
—. They just expect us to listen.
A．I believe not B．No problem C．Good idea D．I can’t agree more