Professional environment is a more formal environment. It could be a work environment. In this environment formal behavior is important because formality boosts the performance. Indeed, it might be dealing with the seriousness of the issue. Let us just imagine vice-versa. When the work is not serious, it cannot create responsible environment because some people will free ride. Therefore, professional environment has its own standards in comparison with personal environment. Personal environment can also be formal, but it is not a necessity.
I believe it would be D I may be wrong
Answer:
it was hoped goes with~ they thought blimps
attempts were~some airships
dirigibles were thought~people thought that blimps
Answer:
Della becomes suddenly nervous about what Jim will think about her hair and how she will tell him how she sold it. She is unsure whether Jim will become cross with her.
I hope this is helpful :] Good luck ^^
I believe the proper answer would be "Sentence 3".
