Verb forms help us to make time reference through their tense. Tense shows whether an action or a state took, take or will take place. For example, the simple past tense is used to express actions that have already happened; the simple present tense is used to express an action that is taking place or happening now; and, the simple future tense is used to express an action which will certainly take place at a time later than now. With that in mind, check the answer whose information provided is the only one correct about simple tenses sentences structure and verb conjugation.