Choose the letter A, B, C or D to complete the passage below

How Singaporeans go green? First, Singaporeans drink NEWater – recycled water. NEWater is suitable ….(6)…. drinking. Second, they go green in shopping. They can now …..(7)……more organic goods. Stores have more friendly options for buyers. Third, buildings in Singapore can be “green” too. They use ceramic tiles to ……(8)…. pollution in the air. Now, 25% of their buildings gets Green Mark. By 2030, 80% of their buildings will get this. Singapore can ….(9)…produce “eco-friendly” cars. They also encourage people to walk or travel …..(10)…. public transport. Finally, they now have more green-collar workers. These are people who manage buildings, work in green industry, or plan green events.

Question 10:

A. in

B. on

C. through

D. by