下面每组对话中均有一处错误,将错误的句子或单词改正过来.(句子在问题补充里)
—Isthereapolicemanonthedoor?
—No,itisn't.Thereisapostman.( )
2. —Where'stheyellowbowl?
—It'sunderthekitchen.( )
3. —Listenup!Thereisaburglarinthelivingroom.
—Nonsense!( )