With his work completed,the business man stepped back to his seat,feeling pleasedhe was a

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A. which
(答案→)B. that
C. what
D. whether
解析：本题考查的是形容词后的宾语从句。feel是连系动词，与pleased构成系表结构，相当于be pleased。 he was a man of action作pleased的宾语从句，因为此从句的结构和意义都很完整，故用连词that。在英语中，从句可作一些形容词的宾语。如：sure,certain,glad,sorry,
happy,pleased,afraid,surprised,satisfied,disappointed,angry,careful,worried,curious,excited等。看下面的例子：He is pleased that he has passed a tough test.他很高兴他通过了很难的测试。I am not certain whether(if) the train will arrive on time.我没有把握火车是否会准点到达。