今天上課的時候遇到一題句子重組如下：
of / him / tell / kind / to / my / embarrassing / not / anyone / story / .
It was _____________________________________.
我覺得答案是：
It was kind of him to not tell anyone my embarrassing story.
同事覺得是：
It was kind of him not to tell anyone my embarrassing story.
另一個同事覺得兩者皆可。
我還是覺得我是對的。用第二種感覺該寫成 It was kind of him not telling anyone
my embarrassing story.
哪位前輩可以告訴我假如不是兩者皆可，哪個答案是對的？為什麼？謝謝！