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 from 1 to 5:
The warming of the Earth is caused by exhaust gas from automobile engines, fatories and power (1)_________. Carbon dioxide goes up into the atmosphere, and it form a kind of screen that keeps or allows the sunshine in but stop the Earth heart (2) _________getting out. It works like a greenhouse, that’s why we call (3) _________the Green House effect. Because of this effect, the Earth is getting warmer all the time. This (4) _________in temperature will cause big changes to the world’s climate. The sea level will increase as the ice (5) _________the poles will melt.
Question 3:
A. is
B. be
C. it
D. them
Đáp án C
Vế phía trước có dùng chủ ngữ it, vì thế ở đây tiếp tục dùng tân ngữ it (Vì cả câu này là nói về “it”).
Dịch: Nó hoạt động như một nhà kính, đó là lý do tại sao chúng ta gọi nó là hiệu ứng nhà kính.