6．This is the book __to which__ he devoted all his energy.

　　7．It is surprising that he has forgotten the person __with whom__ he drank last night.

　　8．The cane (手杖) __with which__ the old man supports himself when walking is made of steel.

　　9．For several days，my telephone rang at 5 a．m., __at which__ I was sleeping.

　　10．He has three sons, two __of whom__ are famous scholars.

　　Ⅲ．单句语法填空

　　1．-Where did you find Tom?

　　-It was in the house __where__ I lived last year.

　　解析：考查定语从句。由语境知答语是个强调句的省略句，补充完整为：It was in the house where I lived last year that I found Tom.。被强调部分是地点状语in the house，后接定语从句，live是不及物动词，不需要接宾语，where在定语从句中作地点状语。

　　2．I shall never forget the years __when__ I lived in the country with the farmers, __which__ has a great effect on my life.

　　解析：考查定语从句。第一个空引导定语从句修饰years，又在从句中作时间状语；第二个空引导非限制性定语从句，在从句中作主语。

　　3．In the dark street, there wasn't a single person __to__ whom she could turn for help.

　　解析：句意：在漆黑的街道上，没有一个她能求助的人。turn to sb.for help"向某人求助"，这是一个固定句式，person为先行词，定语从句部分中she为主语，whom作turn to的宾语，该句to放在了关系代词的前面，关系代词只能用whom。本句的正常语序为"In the dark street, there wasn't a single person whom she could turn to for help"。

　　4．I don't like the way __that__ he treated the old.

解析：考查关系词的使用。定语从句缺少状语。先行词way以in the way的形式在从句中作方式状语。当"way"表示"方式、方法"在句中作先行词，后被一个定语从句修饰时，引导定语从句可用that，也可用in which，或什么都