第 1 题 · 高考
You cannot take photos in the museum without permission, so please ask the staff first.
核心词：permission pəˈmɪʃn n. 允许，许可
未经许可不能在博物馆拍照，所以请先询问工作人员。
一般现在时without + 名词短语 without permission短语 take photos
You cannot take photos in the museum without ___, so please ask the staff first.
第 2 题 · 高考
The host greeted the guests at the door and showed them to their seats.
核心词：greet ɡriːt vt. 问候，迎接
主人在门口迎接客人，并把他们带到座位上。
一般过去时并列动词短语 greet the guests短语 show sb to
The host ___ the guests at the door and showed them to their seats.
第 3 题 · 高考
He was still working at midnight, though he had been tired the whole day.
核心词：midnight ˈmɪdnaɪt n. 午夜，半夜
午夜时分他仍在工作，尽管已经累了一整天。
过去进行时过去进行时 + 让步状语从句短语 at midnight
He was still working at ___, though he had been tired the whole day.
