he failed_____ his attempt to climb the mountain(加介词,在of,from,in,on中选)
问题描述：
he failed_____ his attempt to climb the mountain(加介词,在of,from,in,on中选)
答
选in
fail in 是一个固定搭配,意思是：失败
整句意思是：
他在尝试登山的时候失败了.