情景对话Ben和Kelly正在寻找照相机失主.Ben:A camera.___________is it?Kelly:L

情景对话
Ben和Kelly正在寻找照相机失主.
Ben:A camera.___________is it?
Kelly:Let's ask.
Ben:Excuse me._________?
P1:No,it isn't.
Kelly:_________________.Is this your camera?
P2：________________________.
Ben:Don't worry.
Kelly:________________?
Ben:Maybe we can___________.