第 1 题 · 四级
The two teams agreed to cooperate, which helped them finish the project on time.
核心词：cooperate kəʊˈɒpəreɪt v. 合作，协作
两个团队同意合作，这帮助他们按时完成了项目。
一般过去时agree to do + which 从句 + help sb do + on time短语 cooperate with短语 on time
The two teams agreed to ___, which helped them finish the project on time.
第 2 题 · 四级
She was full of grief after losing her dog, which she had kept for ten years.
核心词：grief griːf n. 悲伤
失去养了十年的狗后，她非常悲伤。
过去完成时be full of + after doing + which 从句（过去完成）短语 be full of grief短语 come to grief
She was full of ___ after losing her dog, which she had kept for ten years.
第 3 题 · 四级
We must utilize every minute, which will help us pass the exam.
核心词：utilize ˈjuːtɪlaɪz v. 利用
我们必须利用每一分钟，这会帮我们通过考试。
一般现在时情态动词 + utilize + which 从句（将来）短语 utilize resources短语 utilize time
We must ___ every minute, which will help us pass the exam.
