语法填空,最好说明原因,
Recently,a sad thing has happened.A girl has gone _____(miss) on her way to school.No one knows ____ she is.Her parents have ___ (report) it to the police.Now,her relatives and friends can't be ____ (relax).They think that someone may have kipnapped ____ (she).According to her parents,she is a girl who _____ fails to get to school on time.The police are discussing ______ they can find her.We all hope that she is _____(luck) enough to return home soon.______ we live in a peaceful society,there are still some bad people,Therefore,we all should learn to protect ____(we).