He was taken as a hero because of his _______ (risk) ________ (lose) his own life to save a drownin
问题描述：
He was taken as a hero because of his _______ (risk) ________ (lose) his own life to save a drownin
为什么是 risking ,losing,
答
因为because of 后加名词,而动名词（v-ing)可以做名词,则用risking ;而risk+doing+sth,所以用losinghis risk也是名词啊risk在这儿是动词，只是用ing形式表示名词