Here are the correct options circled for the exercise:

**a. Circle the correct options.**
1. Who **makes** dinner in your family? - My mom **does**.
2. What / How do you **help** your mom do the laundry? - Well, it’s easy. I **put** all the dirty clothes in the washing machine and then **press** the start button.
3. When / Who does the housework in your family? - My sisters **do**.
4. What / Where do your parents **do** the shopping? - At the shopping mall.
5. When do you / does your sister **get** home from work? - She **gets** at 6:00.

**b. Circle one mistake in each sentence.**
1. My house's pool is quite **big**. (correct: **A**)
2. Mary’s and Bill’s apartment is **big**. (correct: **B**)
3. The children's room is **upstairs**. (correct: **C**)

4. The door's garage is green and **yellow**. (correct: **B**)
5. John's sister's is **5 years old**. (correct: **A**)

Feel free to let me know if you need further assistance!