Сделайте предложение вопросительным 1) there are two pens on the table 2)there is carpet on the floor 3)there are ten trees in the garden 4)there is a blackboard in the classroom

1 Are there two pens on the table?
2 Is there a carpet on the floor?
3 Are there ten trees in the garden?
4 Is there a blackboard in the classroom?