21.A.where
引导词在从句中做地点状语,故用where.D.on which 与前面的factory搭配不对,不能说on the factory
22.B.in which
in which=in the canoes
23.A.whose
引导词要在从句做做定语,修饰homes,故要用whose,其它选项都没有这个用法
21.A.where
引导词在从句中做地点状语,故用where.D.on which 与前面的factory搭配不对,不能说on the factory
22.B.in which
in which=in the canoes
23.A.whose
引导词要在从句做做定语,修饰homes,故要用whose,其它选项都没有这个用法