1 - b
2 - a
3 - d
4 - c

1a
2b

1. dolphin - Why
2. pizza - don't - sandwich

1. b
2. c
3. a

4 yourself - countryside

1. countryside
2. 5B
3. tell - city
4. yourself

Petter: Hello. I'm Ben. Nice to meet you.
Lan: Hello, Ben. I'm Lan. Nice to meet you, too.
Petter: Can you tell me about yourself, Lan?
Lan: Well, I'm in Class 5C, I live in the countryside.
Petter: I'm in Class 5B. I live in the city.

1. A
2. C

I'm in class 5A.
I'm in class 5B.
I live in the city.
I live in the countryside.