第 1 题 · 高考
The teacher explained the infinitive in class, and the students took notes.
核心词：infinitive ɪnˈfɪnətɪv n. 不定式
老师在课上讲解不定式，学生们做笔记。
一般过去时infinitive短语 the bare infinitive
The teacher explained the ___ in class, and the students took notes.
第 2 题 · 高考
The tennis pro trained hard, and he won many games.
核心词：pro prəu n. 专业人士 adj. 职业的
这位职业网球选手刻苦训练，赢了很多场比赛。
一般过去时a tennis pro短语 a pro player
The tennis ___ trained hard, and he won many games.
第 3 题 · 高考
It is impolite to shout at others, and the boy said sorry.
核心词：impolite ˌɪmpəˈlaɪt adj. 不礼貌的
对别人大喊是不礼貌的，男孩道了歉。
一般现在时impolite短语 an impolite answer
It is ___ to shout at others, and the boy said sorry.
