To answer these questions, you need to provide reasons based on personal preferences or imagined scenarios, as the questions appear to be about individual likes and interests. Here are example answers for each question:

1. Why do you like I.T?
- I like I.T because it allows me to solve problems creatively and technology is constantly evolving, keeping it interesting.

2. Why does she like art?
- She likes art because it allows her to express her emotions and creativity through different mediums.

3. Why does your grandpa like science?
- My grandpa likes science because he finds it fascinating to learn how the world works and appreciates the logical approach it takes to understanding natural phenomena.

4. Why do they like English?
- They like English because it helps them communicate with people from different countries and access a vast amount of media and literature.

5. Why does Ngoc like math?
- Ngoc likes math because she enjoys solving complex problems and appreciates the precision and logic that math requires.

6. Why do Minh and Nam like Vietnamese?
- Minh and Nam like Vietnamese because it connects them to their culture and heritage, and they enjoy exploring the nuances of the language.