It would be C. Informal because you are suppose to start business letters with Dear (Yourname) and it's the only one that does.
If you read a lot of books they typically have a main character that has a struggle and finds a way to deal with it, this includes Harry Potter, Goosebumps, and even Shakespeare, so my answer is d
Hey there!
<span>Use the past participle of the verb do to complete the following sentence. The stranger _____ this town a great service.
Answer: D has done!
:)
</span>
Answer:
I think it means that the hours could be changed.
Explanation:
