第 1 题 · 六级
The cliffs are made of limestone, which the geologist has studied all his life.
核心词：limestone ˈlaɪmstəʊn n. 石灰石
这些悬崖由石灰岩构成，地质学家研究了一辈子。
现在完成时被动语态 + 介词短语 + which 从句（现在完成 + 时段）短语 limestone cliffs短语 a limestone cave
The cliffs are made of ___, which the geologist has studied all his life.
第 2 题 · 六级
The movie is about a gangster, which the director has filmed in black and white.
核心词：gangster ˈɡæŋstə n. 匪徒，歹徒
这部电影讲的是一个匪徒的故事，导演用黑白影像拍摄。
现在完成时主系表 + 介词短语 + which 从句（现在完成 + in）短语 a gangster film短语 a gangster story
The movie is about a ___, which the director has filmed in black and white.
第 3 题 · 六级
The red light denotes danger, which the children have learned since kindergarten.
核心词：denote dɪˈnəʊt v. 表示，意味着
红灯表示危险，孩子们从幼儿园起就学会了。
现在完成时主谓宾 + which 从句（现在完成 + 时间点）短语 denote the meaning短语 a sign denoting
The red light ___ danger, which the children have learned since kindergarten.
