怎么改成一般疑问句 并做肯定回答

Question

（1） This is a red baseball.(改成一般疑问句，并作肯定回答）

（2）That is his computer game.(改成一般疑问句，并作肯定回答）

（3）His phone number is 2134542.（对画线部分提问.划线部分为：2134542）
（4）Her family name is Green.（改为一般疑问句，并作否定回答）
（5）I am an English boy.（改成一般疑问句，并作否定回答）

Answer 1

is this a red baseball? yes, this is
is that his computer game? yes, that is
what is his phone number
is her family name Green? no, it isn't
are you an English boy?no, i am not

Answer 2

怎么改一般疑问句？