Thepasttwoyears

Thepasttwoyears________asharpriseinoilprice,whichaddstotheburdenofautotransportationindustry.A.witnessedB.has witnessedC.is witnessingD.witnesses

网友回答

B解析考查时态题。根据the past two years可知应该用现在完成时。本句是无生命的东西作主语，此处的the past two years作主语。witness 解释为：见证了。