87道题考察的是find in doing sth,曾经在2009年12月考察过,所以答案为:in focusing on her experiment. 4 u! ?1 u" K- ]88道题考的是部分倒装。此道题需要注意的是,句首出现否定词时需要进行部分倒装。所以答案为: neither has she lost her temper. : j/ I+ a- b. r) E) d) ^89道题考察的是被动语态,答案为 being invited to attend the opening ceremony. % x, z+ V/ c+ i$ b# Y2 c90道题考察的是虚拟语气,即特殊关键词后面加(should) do。所以答案为:(should) be installed next to the window. S0 T( T6 [, q; [! \. P7 \6 X' ^91道题不难,答案为her parents’ strong opposition.