Answer:
1. Teen
The full form is teenager. Teenager is another word for adolescent.
2. Exam
The full form is examination. The school is examining your science knowledge.
3. Dorm
Dorm is short for dormitory. A dormitory is a large place for multiple people to stay and sleep.
4. Bike
Bike is short for bicycle. A bicycle is used for traveling.
5. Gym
Gym is short for gymnasium. A gymnasium is often a place for indoor sports.
6. Grad
Grad is short for graduate. A graduate is someone who has graduated from college.
7. Auto
Auto is short for automobile. An automobile is another word for car in this case.
8. Flu
Flu is short for Influenza. Influenza is a common highly infectious disease.