Ⅰ.定语从句

　　1．The exact year________Angela and her family spent together in China was 2008.

　　解析："________Angela and her family spent together in China"是定语从句，修饰先行词"the exact year"，关系词在定语从句中做 spent 的宾语，故用关系代词 that 或 which。句意：安杰拉和她的一家人在中国共同度过的确切年份是2008年。

　　答案：which/that

　　2．I borrowed the book Sherlock Holmes from the library last week，________my classmates recommended to me.

　　解析：句意：上周我在图书馆里借了《夏洛克·福尔摩斯》这本书，书是我的同学向我推荐的。先行词为 the book Sherlock Holmes，且在定语从句中做 recommended 的宾语，故用 which。recommend sth.to sb."向某人推荐某物"。

　　答案：which

　　3．Students should involve themselves in community activities ________ they can gain experience for growth.

　　解析：句意：学生应该参与社区活动，在这些活动中他们能获取成长的经验。分析句子结构可知，所填部分引导一个定语从句，修饰先行词 activities，且从句中缺少状语，故用 where。

　　答案：where

4．The book has helped me greatly in my daily communication,