I_______two books on environment protection to complete this assignment.

Neil Armstrong was the first man who walked on the moon.

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 19 to 23.

Global warming is the rise in the average temperature of the earth (19) _____the increase of greenhouse gases. Climate scientists now believe that (20) ______ are mainly responsible for this. The burning of fossil fuels and the cutting down of large areas of forests have contributed to the (21) _______ of a large amount of harmful gases into the atmosphere in recent years. The thick layer of these gases traps more heat from the sun, which leads to the increase in the earth’s temperature.

Global warming (22) _______climate change and catastrophic weather patterns such as heat waves, floods, droughts, and storms, which can affect human lives. Hundreds of millions of people may suffer (23) _____ famine, water shortages, and extreme weather conditions if we do not reduce the rate of global warming.

_______ all necessary preparations, we put our plan into action.

I come from a city that is located in the southern part of the country.

The man who is standing there is my brother.

“Think before print” is the slogan to encourage people to save _______ .

I_______a research since last week. I will finish it this Friday.

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Who was mentioned as being on board the Space Shuttle Challenger?

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

“Don’t forget to take your medicine regularly”, Nam’s father told him.

=> Nam’s father reminded ____________________________.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.