помогите вставить артикль а/an и предлоги in on under очень надо

There is A ball ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.? это предложение как понять что именно вставлять ?

Ты можешь всавить любое из этих слов. Просто мяч может находиться в оазных местах от кровати.

1. There is A doll ON the sofa.2. There is A ball UNDER the table. 3. There is A cat ON the armchair. 4. There is AN apple ON the table.5. There is A dog UNDER the table.6. There is AN umbrella ON the sofa. 7. There is A picture ON the wall.8. There is A vase ON the table. 9. There is A robot ON the floor.10. There is A car UNDER the armchair.-----------------------------------------------------------------1. There is A ball ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.2. There is AN umbrella ON the floor. 3. There is A picture ON the wall.4. There is AN apple ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.5. There is A bike ON the floor.6. There is A vase ON the table. 7. There is A flower ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the sofa.8. There is A chair IN FRONT OF, BEHIND, NEXT TO the table.9. There is A lamp BETWEEN the sofa and the armchair 10. There is A robot ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.11. There is A mouse ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the chair.12. There is A window NEXT TO, NEAR the sofa.13. There is A flower IN the vase.