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At first, the speaker was ( ) about eco-friendly activities.

• skeptical

• favourable

• grateful

If every country (live/lived/lives) like U.S., we'd need four earths.

• live

• lived

• lives

What did the communities of California do to reduce use of plastic bags?

• They gave bags for free

• They charged little money for a bag

If New York city [have/had/has] a bag fee, we could save 7 billion plastic bags a year.

• have

• had

• has

According to the woman, the responsibility for wastes does not fall on ( ).

• goverment

• citizen

• business

What did the man suggest as a solution for climate change?

• 이산화탄소 배출량 제한하기

• 이산화탄소 배출에 대한 비용을 부과하기

• 이산화탄소 사용을 금지하기

작은 행동이 기후 변화에 의미 있는 결과를 가져온다고 볼 수 있는 이유로 언급된 것은?

• It can change general cultures

• It can give companies motivations to reduce pollution

He talks as if he (knew/knows/know) everything.

• knew

• knows

• know