同意句 he found that watching english-language videos was frustrating等于 he found ( ) english- language videos(. )括号内的单词是什么?

问题描述:

同意句 he found that watching english-language v
ideos was frustrating
等于
he found ( ) english- language videos(. )
括号内的单词是什么?

watching ,frustrating 这是一个句式,find sth adj
he found watching english- language videos frustrating