6、 engineer, _______ leg was badly hurt, was quickly sent to hospital.3.TheGreatWallistheplace____almostalltouristswouldliketovisitwhentheycometoBeijing.4.Sailingacrosstheoceanalonewasanachievement_____tookcourage.5.Thewonderfulmoment,_____wehadbeenexpectingforyears,finallycame.6.Therewasat