Iwassufferingfromahe的精选

问题详情：Iwassufferingfromaheadache.ThatwasprobablybecauseI________infrontofthecomputertoolong.A．worked   B．wasworkingC．havebeenworking   D．hadbeenworking【回答】D【解析】考查时态。句意：我头疼。可能是...