Which of the following sentences is grammatically correct?

Question

Quizplus · Accepted Answer

Every sentence must contain a subject and predicate.
The subject of a sentence is the person, place, thing, or idea that is doing or being something. You can find the subject of a sentence if you can find the verb. Ask the question, "Who or what is performing the action in the sentence?" and the answer to that question is the subject.
The predicate is the part of a sentence or clause containing a verb and stating something about the subject.
"To be honest, we were late because of the terrible snowstorm that started last night." is correct because the subject is "we" and the predicate is "were late because of the terrible snowstorm that started last night."
To be honest, arriving later because of the terrible snowstorm starting last night.  is not grammatically correct because it is missing a subject.
To be honest, we being late because of the terrible snowstorm that started last night. is not grammatically correct because the verb "being" is used incorrectly in this sentence.
To be honest, were late because of the terrible snowstorm that started last night. is not grammatically correct because it is missing a subject.

Which of the Following Sentences Is Grammatically Correct