第 1 题 · 六级
The workers handled the hazardous waste with great care, which the safety manual strictly requires.
核心词：hazardous ˈhæzədəs adj. 危险的，有害的
工人们极其小心地处理危险废料，安全手册对此有严格规定。
一般过去时主谓宾 + 介词短语 + which 从句短语 hazardous waste短语 a hazardous job
The workers handled the ___ waste with great care, which the safety manual strictly requires.
第 2 题 · 六级
He ordered a dozen oysters at the seaside restaurant, which were fresh from the sea that morning.
核心词：oyster ˈɔɪstə n. 牡蛎
他在海边餐馆点了一打牡蛎，牡蛎是当天早晨刚从海里捞上来的。
一般过去时主谓宾 + 介词短语 + which 从句（主系表）短语 a dozen oysters短语 oyster sauce
He ordered a dozen ___ at the seaside restaurant, which were fresh from the sea that morning.
第 3 题 · 六级
A strange odor filled the kitchen, which the cook traced to the burnt milk on the stove.
核心词：odor ˈəʊdə n. 气味
一股奇怪的气味弥漫厨房，厨师查明是炉子上烧糊的牛奶发出的。
一般过去时主谓宾 + which 从句 + trace to短语 a strange odor短语 body odor
A strange ___ filled the kitchen, which the cook traced to the burnt milk on the stove.
