38. How are five kilos of rice?
Answer: C. some
Explanation: The sentence refers to the amount of rice, and "some" is the appropriate word to describe an indefinite quantity, as we typically say "some rice" instead of "a lot of" or "many" in this context.

39. I saw an old friend the bus Friday evening, but he didn't see me.
Answer: C. on-on
Explanation: The correct phrase should be: "I saw an old friend on the bus Friday evening," as we use "on" for public transportation like buses. The second part of the sentence should also use "on" for a day or time expression, as in "on Friday evening."

40. The film starts 8 p.m Saturday.
Answer: A. in on
Explanation: The correct sentence should be: "The film starts at 8 p.m. on Saturday," as we use "at" for specific times and "on" for days of the week.

41. Oxford University is one of the oldest universities the UK.
Answer: A. in
Explanation: The correct phrase is "Oxford University is one of the oldest universities in the UK." We use "in" when referring to countries or large areas.

42. Children should take place in outdoor activities for physical and mental health.
Answer: C. take part in
Explanation: The correct phrase is "take part in," meaning to participate in something, such as outdoor activities.

43. The girls like skipping rope or playing badminton on break time.
Answer: A. on break time
Explanation: The correct phrase should be "The girls like skipping rope or playing badminton during break time," as "during" is more appropriate to describe something happening at a specific time.

44. The plane takes off in 6:00 tomorrow morning.
Answer: A. in
Explanation: The correct phrase is "takes off at 6:00 tomorrow morning," as "at" is used for specific times.

45. She is doing yoga on the club now.
Answer: B. in
Explanation: The correct phrase should be "She is doing yoga in the club now," as we use "in" when referring to being inside a location.

46. Her style is quite different to mine.
Answer: C. to
Explanation: In this case, the correct preposition would be "from," not "to." So the sentence should be: "Her style is quite different from mine."

47. How many are six cartons of orange juice?
Answer: A. How many
Explanation: The sentence should be: "How many are there in six cartons of orange juice?" because we are asking about a quantity of something.

48. We spent any money traveling to Thailand last month.
Answer: C. any
Explanation: The sentence should be: "We spent a lot of money traveling to Thailand last month," because we generally use "a lot of" when referring to a large amount of money. "Any" is used in negative or question forms.

Reading Passage:
Based on the passage about Richard and his fishing hobby, here are the answers to the questions:

What is Richard's hobby?

Explanation: The passage clearly states that Richard is a writer and he enjoys fishing very much.

Answer: D. fishing

What does Richard usually do when going fishing?

Answer: He goes to the river behind his house to fish. He often catches a lot of fish and releases the small ones.