Based on the passage provided, here are the answers for the multiple-choice questions:

**XI. Choose the correct answer A, B, C, or D to fill each blank in the following passage:**

1. (1) - C. be
2. (5) - A. that
3. (6) - D. yours
4. (9) - A. you

**XII. Read the passage and choose the best option to answer each of the following questions.**

1. What is the passage mainly about? - A. The importance of hobbies
2. What can a hobby give you? - B. Chance to afford new things
3. What is a hobby? - B. Hobbies and interests
4. What should we do if we want to cultivate a new hobby? - D. check the options
5. Our interests and hobbies vary because - C. each of us enjoys many things
6. What does the word "It” refer to? - A. An activity

If you need further clarifications or explanations, feel free to ask!