Use a preposition: The ball is _____ the box.
ON
Is there a DVD player?
No, there isn't.
Is there a newspaper?
Yes, there is.
Answer the question: How many sofas are there?
There is a sofa. / There is one sofa.
Answer the question: Where's the book?
The book is NEXT TO the apple.
Answer the question: Where's the letter?
The letter is NEXT TO the table. / The letter is ON the floor.
Are there two lamps?
No, there aren't. There is one lamp.
Answer the question: How many pictures are there?
There are two pictures.
Answer the question: Where's the cat?
The cat is UNDER the table. / The cat is ON the floor.
Answer the question: Where's the ball?
The ball is IN the box.