Câu 1 : a/the/tree/yesterday/on /there/cat
⇒ Was there a cat on the tree yesterday ?
Câu 2 : Any/in/there/room/children/the/five/minutes ago.
⇒ Were there any children in the room five minutes ago ?
Câu 3 : boy/the/the/at/yesterday/evening/cinema.
⇒ Was the boy at the cinema yesterday evening ?