【参考答案】：87. studying abroad by herself
88. It's true that we are not always going to succeed in our ventures,_______________(即使我们投入时间和金钱).
【参考答案】：88. even if we invest time and money in them
89. The old couple hoped that their son________________(将不辜负他们的期望).
【参考答案】：89. would live up to their expectations
90. So hardly_________________(他在车祸中受伤)that he had to stay in the hospital for a whole year.
【参考答案】：90. had he been injured in the traffic accident
91. Nowadays, some people still have trouble________________(从网上获取信息).
【参考答案】：91.obtainning information from the internet
87. studying abroad by herself
【解析】本题考查固定短语介词搭配用法。looking forward to中to为介词，因此后面的动词为-ing形式。同时注意“独自”可以译为by oneself，on one's own等等。
88. even if we invest time and money in them
【解析】本题考查让步状语从句及固定短语。“即使”可以译为even if, even though, though, although等等;“投入时间和金钱”可以用短语invest… in sth.;spend…on sth等等。
89. would live up to their expectations
【解析】本题考查固定短语用法。live up to 即“不辜负;做到”;同时注意时态一致，主句是过去时，因此从句谓语will 换成would。
90. had he been injured in the traffic accident
【解析】本题考查部分倒装结构。so hardly 这种副词结构放在句首表强调，后面引导的句子主谓要部分倒装，因此had提到主语he之前;同时根据that主句的时态可以推断前面句子为过去完成时被动态。因此为had been done。
91. obtaining information from the internet
【解析】本题考查固定结构用法。have trouble doing sth.“做什么事情有麻烦”，这里是用动词的-ing形式，obtain要换成obtaining。同时“从……获取”可以译为obtain … from; get…from等等。