Have a careful thought of you are doing and tell how you fell about it.
A. what
B. which
C. that
D. whether
网友回答
(答案→)A. what
B. which
C. that
D. whether
解析：考查宾语从句。本题中of后面是一个宾语从句，从句缺宾语，故使用连接代词，排除CD，what表广泛概念，无范围，which常表范围内选择。故选A。句意：仔细想一想你所做的事情然后告诉我你对这件事的看法。