Here are the matches between the questions in column A and their answers in column B:

1. Do they live in the countryside? - **d. Yes, they do.**
2. How does Hoang go to school? - **a. He goes to school by bike.**
3. When do you have Math? - **b. We have it on Monday and Wednesday.**
4. Is there a park near your house? - **e. Yes, there is.**
5. What are they doing? - **f. They are doing the housework.**
6. Where does his mother work? - **c. She works in a hospital.**

So the complete matching is:

1 - d
2 - a
3 - b
4 - e
5 - f
6 - c