"Me too!" is a complete sentence because it expresses a complete thought, indicating agreement or shared experience. It consists of a subject (implied "I") and a predicate. Although it is short, it effectively communicates the speaker's sentiment.
Do you work? is a complete sentence; it is not a sentence fragment.
"She wave." is fragment but "She waves" is a sentence.
fragment
Fragment.
sentence fragment
It is a sentence fragment
is a sentence fragment
"After the storm," is not a complete sentence so it is a fragment.
Make each fragment into a complete sentence.
A fragment sentence is a partial sentence. It does not have everything it needs to be a full sentence. For example: "The dog" is a fragment.
A sentence is a fragment when you do not have a noun/pronoun and a verb.
In order to not write a sentence fragment, you must always have a subject in your sentence and a predicate. For example: Fragment: Went to the movies. Sentence: I went to the movies.