【题目】Jerry did not regret giving the comment but felt ______ he could have expressed it differently.
A.why
B.how
C.that
D.whether

【答案】C
【解析】句意：Jerry并不后悔做出这样的评论，但是感觉他本可以换种方式表达。这是一个宾语从句，从句内容完整，用that连接，选C。