Question

we -- people -- riding in cars to decrease the amount of CO2.we need to take a campaign.

A could ask ,stop B should urge,to stop
C must urge,stopping D can ask,stopped

Answer 1

你好，同学，很高兴回答你的问题

正确答案：选B

即：We should urge people to stop riding in cars to decrease the amount of CO2. We need to take a campaign.

翻译：我们应该强烈要求人们停止开车以降低二氧化碳的排放量。我们需要采取行动了。

解析：这题主要是考查搭配问题。ask sb. to do sth 要求某人做某事；urge sb. to do sth 强烈要求某人做某事；stop doing sth 停止做某事。所以B是正确的。

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Answer 2

B吧。。。。。。