一. 单项填空（共15小题；每小题1分，满分15分）
( ) 21. —Ron, I congratulate you on your success.
—Thanks, but the honor _____ to all the people here.
A. is belonged B. belongs C. is belonging D. belonged
( ) 22. The parents are _____ their son who has been away from home for days.
A. in search of B. to search C. searching D. searched for
