问题补充：
With his work completed, the businessman stepped back to his seat, feeling pleased he was a man of action.
A. which
B. that
C. what
D. whether
答案：
A. which
(答案→)B. that
C. what
D. whether
解析：主要测试宾语从句。由所给语境可知译文为：把工作做完后，这位商人又座到自己的凳子上，感觉非常满意：自己是个付诸行动的人。再结合平时的学习就可知某些形容词后面可以接宾语从句，经常后接宾语从句的形容词如下：afraid、delighted、sure、anxious、aware、certain、convinced、determined、glad、proud、surprised、worried、sorry、thankful、ashamed、disappointed、annoyed、pleased、hurt、satisfied、content等等，并且宾语从句中的引导词that可以省略。例如：I am afraid（that）Ive made a mistake。恐怕我犯了一个错误。
