Final answer:
To correctly complete the sentences, one must ensure subject-verb agreement in the present tense and maintain verb tense consistency. Comma usage rules are also important, as they can change the meaning of a sentence. These grammar components are key in constructing clear and accurate sentences in English.
Step-by-step explanation:
To complete each sentence by writing the verb in parentheses in the correct form of the present tense, one needs to determine the subject and ensure subject-verb agreement. First, identify whether the subject is singular or plural and then choose the appropriate verb form to match. For example, if the sentence is 'The choir usually (sing/sings)', and 'choir' is the subject, we know it refers to a group. Therefore, the correct present tense form would be 'sings': 'The choir usually sings.' Moreover, it is essential to maintain consistency in verb tense throughout a text unless there is a specific reason to change. In the sentence 'about John Lewis's courageous stance against injustice when he (speak/spoke)', if referring to the past, 'spoke' would be correct; if it is a habitual action, 'speaks' would be correct. It's all about understanding the context and ensuring the verb tense matches the time of the event being described. Lastly, in the review questions section dealing with comma usage, it's important to know the grammatical rules. Commas often separate clauses, items in a list, or are used after introductory phrases. For instance, in sentence 4 'Though Susan wasn't feel well she went to the store anyway and bought ice cream pizza, and candy.', the corrections would be 'Though Susan wasn't feeling well, she went to the store anyway and bought ice cream, pizza, and candy.'.