1. My parents go cycling every Sunday. It keeps them __________.

   1. D. unfit (Câu này nói về việc đạp xe giúp giữ sức khỏe, nên từ "unfit" là sự lựa chọn phù hợp trong ngữ cảnh này.)

2. As volunteers, we help old people in our neighborhood with their chores.

   1. D. older (Câu này nói về "people" ở đây là những người cao tuổi, nên từ "older" là phù hợp.)

IV. Choosing the Closest Meaning

1. My parents go cycling every Sunday. It keeps them fit.
   • A. nice (This doesn't directly relate to physical condition.)
   • B. sick (This is the opposite of fit.)
   • C. poor (This doesn't relate to fitness.)
   • D. unfit (This is the opposite of fit.)

Correct Answer: D. unfit

• "Fit" means healthy and in good physical condition. "Unfit" means the opposite, not healthy or not in good physical condition. Cycling helps your parents stay fit.

1. As volunteers, we help old people in our neighborhood with their chores.
   • A. young (This is the opposite of old.)
   • B. sick (This doesn't relate to age.)
   • C. poor (This doesn't relate to age.)
   • D. older (This doesn't directly relate to volunteering with the elderly.)

Correct Answer: A. young

• "Old" refers to people who have lived for a long time. "Young" is the opposite, referring to people who haven't lived for a long time. Volunteers are typically not limited by age, but we often help those who may need assistance due to their age.

V. Choosing the Opposite Meaning

1. Food in this country is getting very expensive.
   • A. fresh (This doesn't necessarily relate to price.)
   • B. rare (This could imply high price, but not necessarily the opposite.)
   • C. nice (This doesn't relate to price.)
   • D. cheap (This is the opposite of expensive.)

Correct Answer: D. cheap

• "Expensive" means costing a lot of money. "Cheap" is the opposite, meaning costing little money.

1. The room is very dirty, so I have to clean it up.
   • A. messy (This is a synonym for dirty.)
   • B. clean (This is the opposite of dirty.)
   • C. crazy (This doesn't relate to cleanliness.)
   • D. interesting (This doesn't relate to cleanliness.)

Correct Answer: B. clean

• "Dirty" means covered in dirt or unclean. "Clean" is the opposite, meaning free from dirt or stain.

1. D. unfit
2. D. older
3. D. cheap
4. B. clean