新目标八年级英语下册Unit10 Section A 3b怎么写?

1. Two people looking through books in a bookstore.
There are so many books, aren't there
2.Two people alone in an elevator.
This elevator is wide ,isn't it
3.Two people waiting in line to buy ice cream
The weather is so hot,isn't it
4.two people waiting to cross a busy street
it is so Crowd,isn't it