"Mom cooked dinner." is indeed a complete sentence. It contains all parts of a complete sentence.
In the sentence Mom made dinner:Mom is the subjectmade is the verbdinner is the objectShe made dinner - She is a pronoun subject.
It's a compound sentence, with two independent clauses connected by the conjunction "and."
Mom cooked a big turkey for supper.
Capitalization is important. It gives clarity to the thoughts that the sentences convey. Examples. Her mom, Mrs. Cooks ate spaghetti for dinner. Her mom cooks spaghetti for dinner.
Nothing is wrong the sentence is good
My mom gave us a lovely cheesecake dessert after dinner.
To call us in for dinner, Mom used to ring an iron triangle.
My mom told me to go to the store to buy food for dinner and so I did.
i had a dark and hueless day today, remarked mom as she sat down to eat dinner.
She made a long phone call. Mom will call us when dinner is ready.
"Hey, mom, what is for dinner?" "I am baking yesterday's stew in a pot pie."
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