按括号内的内容提问：
1、(He) has a purple sofa.
2、He has a （purple） sofa.
3、He has （a purple sofa).
4、The racket is (mine).
5、(He) often does his homework at home.
6、He (often) does his homework at home.
7、He often (does his homework) at home.
8、He often does his homework (at home).
9、He often does (his homework) at home.