Does your brother work in a hospital? is the correct sentence.
Both of Lin's brothers-in-law work at the Observatory.
"I guess you are at work" is a correct sentence.
It depends how you use it. If you use it after something it can be correct. But being in a sentence by itself isn't correct.
carlos has did his work correct
your work has definietly correct
Yes!
It's correct.
yea
No, this is not a correct sentence. It should be guess instead or guest at the second word.
"It is I who have to work" is the correct sentence. In this construction, "I" is the subject pronoun, so it should take the corresponding verb form "have."
In this sense, "reported to work" is correct. It's just an awkward sentence. You could change he first option to "reporting for work" and that would also be correct, but the position of the preposition is incorrect.
The sentence "It lacks agreement Possible correct alternatives are He is the one of the men who does the work or He is one of the men who do the work" are not of correct grammar.