Peopleshouldthinkabout

Peopleshouldthinkabout_____theycanhaveapositiveinfluenceontheplanet.A.whyB.thatC.whatD.how

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D解析考查宾语从句。 宾语从句How they can have a positive influence on the planet作为think about的宾语。本句主要是从句意出发。句意：人们应该考虑他们怎么样才能对地球有积极的影响。