Замените подлежащие на данные в скобках, обращая внимание на форму глагола в Present Simple.
This poem is funny.( his stories)
The museum is open on Sunday.( the theatres)
Ann and Kate are my old friend. ( Peter)
The shelfs is on the wall.(the pictures)
The cup is green.( the cups)

His stories are funny. The theatres are open on Sunday. Peter is my old friend. The pictures are on the wall. The cups are green.