It doesn't cost much to run a solar power system.
A. A solar power system is quite cheap to set up.
B. Running a solar power system costs nothing.
C. A solar power system costs so much to run.
D. Running a solar power system is not costly.
Đáp án đúng là: D
Dịch: Không quá tốn kém để vận hành một hệ thống năng lượng mặt trời.
Australians use English as their mother tongue so they are native speakers.
Although Singapore is a developed country, it is not polluted by industry
This/ I/ is/ have/ country/ first/ been/ the/ to/ this/ time/ country.
such/ Amsterdam/ again/ is/ it/ one/ a/ that/ to/ wonderful/ want/ city/ I/ visit/ again/ day.