a sentence for return
Your return is subject to audit.
The king may capitulate if you give him something in return.
"He will return." is a complete sentence; 'he' is the subject and 'will return' is the verb.
I live in a foreign land, but have a yearning to return to the land of my birth
I came today to return the books that I borrowed.
He will return. Yes, this is a complete sentence.
A period of prosperity never lasts long enough, but if you can be patient, it will return.
"And you are an adult. Now that we set age aside, let's discuss intelligence."
No, "federal tax return" is not capitalized in a sentence unless it is part of a title or the beginning of a sentence.
The company guaranteed the quality of its products by allowing customers to return them within one year if they broke.
Mom is about to return from her trip
A sentence only requires a subject and verb - everything else is just details. "He wept" is a prime example of a viable sentence, and "he will return" is another.