Нужно вставить артикли вместо точек. 1. open books at page 20,please. 2. pupils are doing exercise 5. 3. will you read paragraph 3,please? 4. will you write sentence 2, please? 5. they are in room 6

1. Open the books at page 20,please. 
2. The pupils are doing exercise 5.
3. Will you read a paragraph 3,please?
4. Will you write a sentence 2, please?
5. They are in the room 6