There is / There are - Make Sentences - 1

Rewrite the sentences as in the example.
There is one book on the table. (three) There are three books on the table.
1. There are two knives on the counter. (one)
2. There is one apple in the bag. (five)
3. There isn't one tree in the garden. (three)
4. There aren't six boys in the classroom. (one)
5. There is one cat on the chair. (two)