第 1 题 · 四级
This is the worst accident that has ever happened in the city.
核心词：worst wɜːst adj. 最坏的（bad 的最高级）
这是这座城市发生过的最严重的事故。
现在完成时最高级 + 现在完成时 that 从句短语 the worst短语 worst of all
This is the ___ accident that has ever happened in the city.
第 2 题 · 四级
The avenue that runs through the city is lined with old trees.
核心词：avenue ˈævənjuː n. 林荫道，大街
贯穿城市的那条林荫大道两旁种满老树。
一般现在时限定性定语从句 + 被动语态短语 an avenue短语 be lined with
The ___ that runs through the city is lined with old trees.
第 3 题 · 四级
On the eve of the exam, she stayed up late to review her notes.
核心词：eve iːv n. 前夕，前夜
考试前夕，她熬夜复习笔记。
一般过去时on the eve of + 不定式目的状语短语 on the eve of短语 New Years Eve
On the ___ of the exam, she stayed up late to review her notes.
