Which is a complete sentence? A. The sad end of a long movie. B. He could not wait long. C. Began her lessons early Tuesday morning. D. Three active boys playing on the field.
Among the choices, the only complete sentence is the second choice, "B. He could not wait lang. This is a complete sentence because the thought is already complete. All the rest of the choices did not express complete thought. The subject and the predicate are also connected by a linking verb.