用something , someone, nothing, nonesomebody填空 The light in the room is still on. There must be (用something , someone, nothing, nonesomebody填空The light in the room is still on. There must be ( ) in it.请说明理由
问题描述：
用something , someone, nothing, nonesomebody填空 The light in the room is still on. There must be (
用something , someone, nothing, nonesomebody填空
The light in the room is still on. There must be ( ) in it.
请说明理由
答