Answer:
1.The equipment is broken by someone.
2.Firstly the liguid must be heated.
3.Safety glasses must be worn in laboratory.
4.Science competition is won by a very young student.
5.A brilliant scientist is Dr liu .( this 5 no ans might be wrong)
Answer:
puffy, huge, and gloomy sometimes
Explanation:
These are the adjectives of a cloud sometimes
Principles
I think principal is not right because it doesn’t look right.