There would be no life on earth
_________________ (没有地球独特的环境)。
89．
90．________________(给游客印象最深的)was the
friendliness and warmth of the local people.
They
requested_________________(我借的书还回图书馆) by next Friday.
91．
87. 为了确保他参加会议，我提前打了电话。
In order to ensure him to attend the meeting.
解析：
为了做某事“In order to do sth.”，确保某人做某事“ensure sb. to do sth.”
In order to
ensure his
participation in the meeting.
当然这里也可翻译为：
88. 这座重要的博物馆据说建成于100多年前。
is said to have been built.
解析：
据说“be said to do sth.”而“be said to + 动词不定式的现在完成时”表示动作已经完成。
89. 没有地球独特的环境就不会有生命出现。
without its unique environment.
解析:
没有“without sth./doing sth”
90．给游客印象最深的是当地居民的友善与热情。
What impressed the tourists most.
解析：
what 引导的主语从句;“给某人留下最深印象”可用“impress sb sth.”
