Choose the word or phrase that is CLOSEST in meaning to the underlined part in each of the following sentences.
16. English and French are official languages in Canada.
A. main B. formal C. primary D. popular
17. There is still room for improving in your work.
A. space B. place C. area D. accommodation
18. The first experiment was unsuccessful, so we need to do another one.
A. managed B. bored C. failed D. damaged
Choose the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following question.
19. The sight of too many telephone poles, advertising billboards, overhead power times, or shop signs may cause visual pollution.
A. contamination B. population C. cleanness D. eruption
20. Because warmer water has less oxygen in it, it can harm aquatic populations.
A. destroy B. protect C. raise D. increase