21．— Hi, Maria! I got the first place in the exam.
— ______! Everyone knows you cheated and you just copied Tony’s.
A. Congratulations B. Come on C. Good luck D. Cheer up
22. Obama, _____ president of the USA, won _____ Nobel Prize for Pease in 2009.
A．\; a B．a; the C．\; the D．the; a
23. Under the circumstances I usually think of the great effo rt and courage it _____ for the girl to come back and apologize.
A. made B. afforded C. spared D. took
24.The two boys are alike in age, but _____ they are as different as day and night.
A. anyhow B. besides C. otherwise D. moreover
