第 1 题 · 高考
He is cautious about making decisions, because a wrong choice can be costly.
核心词：cautious ˈkɔːʃəs adj. 谨慎的
他做决定很谨慎，因为错误的选择代价很高。
一般现在时原因状语从句短语 be cautious about短语 a cautious man
He is ___ about making decisions, because a wrong choice can be costly.
第 2 题 · 高考
The title of the book attracted many readers, because it was very interesting.
核心词：title ˈtaɪtl n. 标题，题目
这本书的书名吸引了许多读者，因为书名非常有趣。
一般过去时原因状语从句短语 the title of短语 a book title
The ___ of the book attracted many readers, because it was very interesting.
第 3 题 · 高考
The volcano erupted suddenly, which forced thousands of people to leave their homes.
核心词：erupt ɪˈrʌpt vi. 喷发，爆发
火山突然喷发，迫使数千人离开家园。
一般过去时which 非限制性定语从句短语 erupt suddenly短语 a volcano erupts
The volcano ___ suddenly, which forced thousands of people to leave their homes.
