[HK1-K10] This is done by (18) _________ the 3Rs.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks

The most obvious advantage of living green is that it helps reduce environmental pollution. This is done by (18) _________ the 3Rs. The first R means choosing products very carefully to reduce waste as much as possible. Reusing involves the repeated use of items. The third R is about separating materials that can be recycled and later used for a new purpose.

There are also (19) _________ benefits to living green. Reducing the use of energy and water can help save money on household bills. Furthermore, reusing products and materials is another way to make saving. It helps save on production costs (20) _________ creating new products wastes materials and is expensive. Recycled products also last longer than new ones, making them a better and more eco-friendly option.

Lastly, going green offers health benefits. It reduces air pollutants by making the air we breathe cleaner and healthier. This means fewer diseases and doctor’s appointments. Another way (21) _________ your health is to purchase organic foods and green products for your household. They don’t use harmful chemicals that can (22) _________ health issues. In turn, you are also supporting responsible farming methods that protect the environment.

Câu hỏi:

(18) ________

• 
  A.
  practising
• 
  B.
  doing
• 
  C.
  making
• 
  D.
  following