定语从句的主语问题

题目

定语从句的主语问题
Alice drew the pictures which (it) has a house and a garden in it 加不加那个it做主语
The shoes that（ ）were made by her are very well 括号那个要不要加什么当主语

答案

which指代pictures作从句的主语,不加it
that后是定语从句,that作从句主语,也不加成分