第 1 题 · 高考
The slaves worked in the fields, which history books record sadly.
核心词：slave sleɪv n. 奴隶
奴隶们在田里劳作，史书悲伤地记录着这段历史。
一般过去时work in + which 定语从句短语 a slave短语 work like a slave
The ___ worked in the fields, which history books record sadly.
第 2 题 · 高考
The boy shot stones with a slingshot, which broke the window by accident.
核心词：slingshot ˈslɪŋʃɒt n. 弹弓
男孩用弹弓射石子，不小心打碎了窗户。
一般过去时shoot with + by accident短语 a slingshot短语 shoot with a slingshot
The boy shot stones with a ___, which broke the window by accident.
第 3 题 · 高考
The fog was so thick that the cars had to move slowly, which delayed everyone.
核心词：fog fɒɡ n. 雾
雾太浓，汽车只能缓慢行驶，耽误了所有人。
一般过去时so...that 结果状语从句短语 heavy fog短语 in the fog
The ___ was so thick that the cars had to move slowly, which delayed everyone.
