第 1 题 · 六级
The plane landed on the runway by inertia, which the experienced pilot has explained to the students.
核心词：inertia ɪˈnɜːʃə n. 惯性；惰性
飞机靠惯性在跑道上着陆，经验丰富的飞行员已向学生们解释。
现在完成时主谓 + 介词短语 + 介词短语 + which 从句（现在完成 + explain to）短语 by inertia短语 the moment of inertia
The plane landed on the runway by ___, which the experienced pilot has explained to the students.
第 2 题 · 六级
The old man is a quiet and pious person, which the kind neighbors have respected all along.
核心词：pious ˈpaɪəs adj. 虔诚的
这位老人安静而虔诚，善良的邻居们一直很尊敬他。
现在完成时主系表 + 并列定语 + which 从句（现在完成 + all along）短语 a pious person短语 a pious hope
The old man is a quiet and ___ person, which the kind neighbors have respected all along.
第 3 题 · 六级
The child cried in great agitation, which the worried mother has tried hard to calm down.
核心词：agitation ˌædʒɪˈteɪʃn n. 激动，焦虑；搅动
孩子激动地大哭，忧心的妈妈努力安抚。
现在完成时主谓 + 介词短语 + which 从句（现在完成 + try to）短语 in great agitation短语 emotional agitation
The child cried in great ___, which the worried mother has tried hard to calm down.
