Yes. Which brings me to the question, "Is "yes." a complete sentence? I think so.
Arrived exactly at their cut off time is not correct grammar. It is a sentence fragment.A grammatically correct sentence would be, "They [or "The widgets we needed to complete the oscillating framizam" or whatever] arrived exactly at their cutoff [not cut off] time."
"The armadillo is a poor swimmer." is a complete sentence
It is a complete sentence.
No, "find him" is not a complete sentence; it lacks a subject. While it can function as an imperative command, a complete sentence typically requires a subject and a predicate. For example, "You should find him" would be a complete sentence.
Complete the sentence with "He".
The phrase "Is you read a complete sentence" is not grammatically correct. A proper form could be "Is this a complete sentence?" which asks whether the statement is grammatically sound. To clarify, a complete sentence must contain a subject and a predicate and express a complete thought.
Using the word "then" at the beginning of a sentence is not incorrect. However, it does not make a sentence complete. A complete sentence must have, at a minimum, a subject and a verb. "Then" is neither of those.
Yes. You would only need a period at the end of the sentence in order for it to be a complete simple sentence.
I presume, assume, you mean, what is the meaning of a complete sentence? A complete sentence has a noun and a verb. I'm glad that I am no longer studying another language.
Yes, a semicolon could indeed join an incomplete sentence and a complete sentence.
to cut short
A and B