第 1 题 · 六级
The train arrives with great regularity, which the punctual workers have relied on for years.
核心词：regularity ˌreɡjuˈlærəti n. 规律性，规则性
这班火车到站非常有规律，守时的工人们多年来一直依赖。
现在完成时主谓 + 介词短语 + which 从句（现在完成 + rely on）短语 with great regularity短语 the regularity of the seasons
The train arrives with great ___, which the punctual workers have relied on for years.
第 2 题 · 六级
The roof of the new house is triangular, which the proud builders have checked with care.
核心词：triangular traɪˈæŋɡjələ adj. 三角形的
新房子是三角形屋顶，自豪的建筑工人仔细检查过。
现在完成时主系表 + 介词短语 + which 从句（现在完成 + with care）短语 a triangular roof短语 a triangular shape
The roof of the new house is ___, which the proud builders have checked with care.
第 3 题 · 六级
The puppy gnawed on the old bone, which the little girl has watched with a smile.
核心词：gnaw nɔː v. 啃，咬
小狗啃着旧骨头，小女孩微笑着观看。
现在完成时主谓 + 介词短语 + which 从句（现在完成 + with）短语 gnaw on短语 gnaw at
The puppy ___ on the old bone, which the little girl has watched with a smile.
