one of the happiest moments that Tony often feels is___of lending a hand to those who need most
问题描述：
one of the happiest moments that Tony often feels is___of lending a hand to those who need most
A what B that C which D this
答
B我高中三年从来没见过还有what of ,which of或者this of 搭配的情况,你看着办吧
这里的that特指前面的one of the happiest moments