问题补充:
He went back to the hall to try hisat finding his lost gold watch,but never found it.
A. best
B. success
C. result
D. luck
答案:
A. best
B. success
C. result
(答案→)D. luck
解析:短语try one’s best(努力,尽力)后常接to do sth.;try one’s luck at doing sth.意为 “碰碰运气做某事” 。B 、C两项不符合题意。