Iwassufferingfromahe的精選

問題詳情：Iwassufferingfromaheadache.ThatwasprobablybecauseI________infrontofthecomputertoolong.A．worked   B．wasworkingC．havebeenworking   D．hadbeenworking【回答】D【解析】考查時態。句意：我頭疼。可能是...