If we _____careful ,fire can be very dangerousA.don't be B.are C.aren't D.won't be请说明一下理由

(22)_____careful we are,___mistakes we will make If we _____careful ,fire can be very dangerousA.don't be B.are C.aren't D.won't be请说明一下理由 If we _____careful ,fire can be very dangerous A.don't be B.are C.aren't D.won't be A不对么? 英语翻译if we . If we belong together if only we belive If we exerxise every If We Ever please _____careful ! A be B is C / “If we thought,we can make it! If we try,we can fly if we were a boy If We Could Start Over if we do our best If We Really Want To only if we understand can we care,only if we understand can we care, If we protect the environment,we will protect_(we). Every morning,we are asked__taken our temperatures.A.if we haveB.if have we C.if we hadD.if had we