Usually you would say that you were at the office, but saying that you were in the office is grammatically correct as well (as long as you are technically in the office building). "I am in office" without the word "the" is only correct if you are currently holding a position which expires (like President or Chair).
No. I think you probably mean 'I am in my office a lot', or 'I am in my office a great deal', or 'I spend a lot of time in my office', or 'I am very often in my office', or something like that. The exact wording you choose will depend on whom you are addressing, how formal/informal you wish to be, and so on.
I believe the correct form would be:
He is at the office.
You have to use 'the' because you are referring to a specific office.
I am in the office
are you at the office
no it is not a correct sentence.
The sentence, "They are going to the beach." is correct.
This is not a sentence it is a phrase and as a phrase it is correct.
This sentence is not grammatically correct. For the sentence to be grammatically correct, the space between "in" and "to" would have to be removed. Therefore the sentence should read "They are into skating."
Yes that is a correct sentence, as long as you have identified who "he" is in a previous statement.
I am present in the office today.Today, I am present in the office.
The correct sentence is: "Three young pretty ladies dropped by the office."
Nope, unfortunately not. This is a somewhat complex formal sentence. The correct structure will be as follows: "It was after reportingin your office that I understood my impulsiveness" It is however still not ideal. Please state in which context you wish to use this sentence...
I came to your office several times and did not see (s) you._______Better:I came to your office but could not find you.
principal's office is correct
"How are you" is a correct sentence.
Yes, this sentence is correct.
The package from your Japan office arrived yesterday. It contains the documents you need.
You are palpitating. This is a correct sentence.
are you at the office
If it is the office of one nurse, this is correct - nurse's office. If it is the office of a group of nurses, this is correct - nurses' office.