1.There is=>are children in front of the trees.

2.I am=>We are your best friends.

3.There is=>are pens under the book.

4.He has got an orange=>oranges in his hands.

5.She has got a child=>children.

6.My neighbor=>neighbors usually buy in this shopping center.

7.I don't like this=>these books.

8.These are the best cake=>cakes I've ever eaten.

1. There are children in front of the trees

2. we are your best friends

3. there are pens under the book

4. they have got oranges in their hand

5. they have got children

6. my neighbors usually buy in these shopping centers

7. we don't like these books

8. they are the best cakes we've ever eaten