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.

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.

89道题考察的是被动语态，答案为 being invited to attend the opening ceremony.

90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.

91道题不难，答案为her parents’ strong opposition.