第 1 题 · 高考
The water is filtered twice, which makes it clean enough to drink.
核心词：filter ˈfɪltə vt. 过滤
水被过滤两次，让它干净得可以喝。
被动语态 + which 定语从句短语 filter water短语 a water filter
The water is ___ twice, which makes it clean enough to drink.
第 2 题 · 高考
The educated parents know how to guide their children, which benefits the whole family.
核心词：educated ˈedjukeɪtɪd adj. 受过教育的，有教养的
有教养的父母知道如何引导孩子，这使全家受益。
一般现在时how to do + which 定语从句短语 an educated person短语 well educated
The ___ parents know how to guide their children, which benefits the whole family.
第 3 题 · 高考
The children play games in the kindergarten, which helps them learn to share.
核心词：kindergarten ˈkɪndəɡɑːtn n. 幼儿园
孩子们在幼儿园做游戏，这帮助他们学会分享。
一般现在时help sb do + which 定语从句短语 a kindergarten短语 kindergarten teachers
The children play games in the ___, which helps them learn to share.
