Choose the correct words. 1 there's/are big computer. 2 there's / are a lot if books 3 there's / are some posters from new yourk

1 There's big computer.
2 There are a lot of books.
3 There are some posters from New York. 4 There's one English teacher. 5 There's a student from Great Britain. 6 There are fifteen boys and sixteen girls.7 There are a lot of pencils. 8 There is one book in my bag.

В первом is, во втором are, в третьем are