第 1 题 · 四级
She chose an elective course in art, which her parents fully supported.
核心词：elective ɪˈlektɪv adj. 选修的；选举的
她选了一门艺术选修课，父母全力支持。
一般过去时主谓宾 + 介词短语 + which 从句短语 an elective course短语 elective subjects
She chose an ___ course in art, which her parents fully supported.
第 2 题 · 四级
The shirt with black and white stripes suits him, which his wife bought yesterday.
核心词：stripe straɪp n. 条纹
这件黑白条纹衬衫很适合他，是他妻子昨天买的。
一般现在时主谓宾 + 介词短语 + which 从句短语 black and white stripes短语 a stripe pattern
The shirt with black and white ___ suits him, which his wife bought yesterday.
第 3 题 · 四级
Light silk compresses well and then expands rapidly, which makes it perfect for parachutes.
核心词：compress kəmˈpres v. 压缩，压紧
轻质丝绸易于压缩且展开迅速，因此非常适合做降落伞。
一般现在时并列谓语 + which 从句 + make it adj短语 compress well短语 a hot compress
Light silk ___ well and then expands rapidly, which makes it perfect for parachutes.
