第 1 题 · 六级
The team carried out a feasibility study before the project, which the busy engineers have finished today.
核心词：feasibility ˌfiːzəˈbɪləti n. 可行性
团队在项目前进行了可行性研究，忙碌的工程师们今天完成了。
现在完成时主谓 + 短语动词 + 定语 + 时间状语 + which 从句（现在完成）短语 a feasibility study短语 technical feasibility
The team carried out a ___ study before the project, which the busy engineers have finished today.
第 2 题 · 六级
Please do not trample on the fresh grass, which the careful gardener has just watered.
核心词：trample ˈtræmpl v. 践踏
请不要践踏新长出的草，细心的园丁刚浇过水。
现在完成时否定祈使句 + 介词短语 + which 从句（现在完成 + just）短语 trample on短语 trample down
Please do not ___ on the fresh grass, which the careful gardener has just watered.
第 3 题 · 六级
The teacher criticized his vulgar language, which the surprised boy has promised to stop using.
核心词：vulgar ˈvʌlɡə adj. 粗俗的，庸俗的
老师批评了他粗俗的语言，惊讶的男孩已答应不再用。
现在完成时主谓宾 + 定语 + which 从句（现在完成 + promise to）短语 vulgar language短语 vulgar behaviour
The teacher criticized his ___ language, which the surprised boy has promised to stop using.
