Which of the following is best supported by the passage?
A.Scientists should be consulted in order to establish uniform limits for all air pollutants.
B.Human activities have been effective in reducing air pollution.
C.One of the most important steps in preserving natural lands is to better enforce air pollution laws.
D.To effectively control pollution, local government should regularly review their air pollution laws.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The students' plan for a musical show to raise money for charity received ______ support from the school administrators.
A.light-hearted
B.warm-hearted
C.big-hearted
D.whole-hearted

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Despacito, ______ over four billion times on YouTube, is one of the most favourite songs among teenagers worldwide.
A.is viewed
B.which viewed
C.viewing
D.viewed

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Maria decided ______ her education after a gap year.
A.to continue
B.to continuing
C.continue
D.continuing

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Only after the bus ______ for a few miles did Jane realise she was on the wrong route.
A.was running
B.had run
C.has run
D.runs

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
There is an increase in the prevalence of electronic books as more people are turning to digitalised reading materials.
A.scarcity
B.deficiency
C.popularity
D.intensity

According to the passage, human- generated air pollution in localized regions .
A.will react harmfully with natural pollutants.
B.can overwhelm the natural system removing pollutants.
C.will damage area outside of the localized regions.
D.can be dwarfed by nature's output of pollutants.

It can be inferred from the first paragraph that .
A.the definition of air pollution will continue to change.
B.water vapor is an air pollutant in localized areas.
C.Most pollutants today can be seen or smelled.
D.a substance becomes an air pollutant only in cities.

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.
A.improves
B.destroys
C.suggests
D.reminds

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.
A.explain
B.involve
C.borrow
D.discuss