7、Itwascarelessofyoutohaveleftthehousewithoutturningoffthegas. —Mygod!_______.A.SowereyouB.SowasIC.SodidID.SoIdid35.—Whatareyoudoing,John?Whystop? —Tobeonthesafeside,we'dfillupthetanknowforwe _______runoutofgasontheway A. must B.willC.might D.should二、