第 1 题 · 六级
The workers are underrepresented in the meeting, which the fair leader has promised to change.
核心词：underrepresented ˌʌndəreprɪˈzentɪd adj. 未被充分代表的
工人们在会议中的代表人数不足，公正的领导已承诺改变。
现在完成时主系表 + 介词短语 + which 从句（现在完成 + promise to）短语 be underrepresented in短语 underrepresented groups
The workers are ___ in the meeting, which the fair leader has promised to change.
第 2 题 · 六级
The boy has a strong feeling of inferiority, which the kind teacher has tried hard to help with.
核心词：inferiority ɪnˌfɪəriˈɒrəti n. 自卑；次等
这个男孩有很强的自卑感，好心的老师努力帮助他。
现在完成时主谓宾 + 定语 + 介词短语 + which 从句（现在完成 + try to）短语 a feeling of inferiority短语 an inferiority complex
The boy has a strong feeling of ___, which the kind teacher has tried hard to help with.
第 3 题 · 六级
The students learned a famous theorem in class, which the careful teacher has explained step by step.
核心词：theorem ˈθɪərəm n. 定理；原理
学生们在课上学了一个著名定理，细心的老师一步步讲解。
现在完成时主谓宾 + 定语 + 介词短语 + which 从句（现在完成 + step by step）短语 a mathematical theorem短语 prove a theorem
The students learned a famous ___ in class, which the careful teacher has explained step by step.
