A: Hello! What ?

It is the most common question to know what someone is doing.
B: We are doing English homework.
A: Are you writing the sentences?
B: Yes
It is a “yes / no question” so it is a short answer.
It is very difficult
B: And you??
A: Hanna and I are writing a dialogue and we are watching a TV series.
B: Yes, of course. That is your homework.
B: Is Mary working with you?
A: No,.
It is a negative short answer using the verb to be as auxiliary.
She is doing exercise in this moment.
A: with Spanish homework?
It is a “yes / no question and you need to use “your friend” as the subject
B: Yes, my friend is helping me with Spanish homework because she is taking Spanish lessons.
A: Spanish?
In the answer you see “At college” so it is a place and you need to start the question with “Where”
B: At college, she is studying there. She is learning a lot of vocabulary.
A: Ok, I have to go. I am receiving a message… Bye.
B: See you.