'...not on the seat, is better, but is still not a complete sentence.
There is no direct object in this sentence.
Please complete your sentence.
Please complete your sentence.
no there is subject
Please put oscillation in a complete sentence.
Please complete your sentence.
Please phrase this in the form of a complete sentence.
Please use a complete sentence.
Please restate your question as a complete sentence.
Please make sure that your seat belt is securely fastened.
Complete sentences are a sentence with a complete thought, statement, etc. Ex: He says he will help me on my homework. (this is a complete sentence) An incomplete sentence would be: He says he. (you did not complete the thought.)