Thedifferencebetweenasmartmanandawisemanis

問題詳情：

The difference between a smart man and a wise man is _______ a smart man knows what to say while a wise man knows whether or not to say it.

A. where               B. when                     C. that                        D. whether

【回答】

C

知識點：複合句

題型：選擇題