this stamp is the ------ in my collections

this stamp is the ------ in my collections This is the first electric light in the world on the stamp.什 The ___ in this stamp makes it less valuable my habit is collect stamp this is -------------- stamp.its ---------american stamp.A.a this is a stamp ( )my father's collection 填of还是from为什么? pest control specific to herbaria collections is similar in Look!This is my calssroom.Some_____are in the calssroom.Look This building is ()big ()the one in my hometown. this is the place ___ my aunt was born in this room is the biggest in my house This is my book.______is in the schoolbag.