Sure, let's correct the sentences that need correction:

**27. I and my brother like lying(A) on the beach(B), so he and I always spend his(C) holiday sunbathing(D).**
- Correction: **C** (his should be our)
- Corrected sentence: My brother and I like lying on the beach, so he and I always spend our holiday sunbathing.

**28. Nam is far from(A) his family, so(B) he remembers(C) his parents in(D) his hometown so much.**
- Correction: **D** (in should be from)
- Corrected sentence: Nam is far from his family, so he remembers his parents from his hometown so much.

**29. It is important for (A) parents to teach (B) their children how using (C) social media wisely (D).**
- Correction: **C** (using should be to use)
- Corrected sentence: It is important for parents to teach their children how to use social media wisely.

For the True (T) or False (F) questions:

**30. A hobby is often done in one's free time.**
- True (T)

**31. People can gain skills and knowledge through taking up a hobby.**
- True (T)

**32. A hobby is mostly developed from the age of two to three.**
- False (F)

**33. It's difficult to predict one's new hobby development.**
- True (T)

**34. Involving in a hobby negatively affects one's health.**
- False (F)

For the sentences closest in meaning:

**35. Playing board games is very interesting.**
- Correct answer: **D. It is very interesting to play board games.**

**36. My parents insist me on learning another language.**
- Correct answer: **A. My parents want me to learn another language.**

**37. Julie finds making crafts boring.**
- Correct answer: **C. To Julie, making craft is not interesting.**

**38. I'd rather surf the Internet than play computer games.**
- Correct answer: **A. I prefer surfing the Internet to playing computer games.**

For rewriting the sentences:

**39. It takes Mr Buong 30 minutes to go to work every day.**
- Mr Buong spends 30 minutes going to work every day.

**40. Nam enjoys surfing the Net to study English.**
- Nam is keen on surfing the Net to study English.

**41. Son Tung loves going out to take some photos of the countryside.**
- Son Tung is interested in going out to take some photos of the countryside.

**42. Nam wants to work with the children in the mountainous areas.**
- Nam adores working with the children in the mountainous areas.

**43. Chatting with friends through the Internet gives me pleasure.**
- I enjoy chatting with friends through the Internet.

**44. It is good to use Facebook to talk with friends.**
- Using Facebook to talk with friends is good.

**45. I hate people to buy my document to sell for money.**
- I dislike people buying my document to sell for money.