1. Does Sara spend a lot of time studying?
->
Yes, she does spend a lot of time studying. (long) --> Yes, she does. (short)-> No, she doesn't spend a lot of time studying. --> No, she doesn't.
2. Can Jane and Max work together on this assignment?
-> Yes, they can work together on this assignment. (long) --> Yes, they can. (short)
-> No, they can't work together on this assignment. --> No, they can't.
3. Is this your favourite sweater?
-> Yes, it is my favourite sweater. (long) --> Yes, it is (short)
-> No, it isn't my favourite sweater. --> No, it isn't.