Explanation: Here’s why: Context of Completion: The word "yet" is used in questions and negative sentences to talk about something that is expected to happen or has happened up to the present moment. Sentence Structure: "Yet" is typically placed at the end of the question to ask if the action has been completed. Usage of "Yet": In the context of asking if all the questions have been answered up to the current point in time, "yet" is the appropriate choice. Therefore, the correct sentence is: "Have you finished answering all the questions yet?"

Explanation: Here’s why: Present Perfect Tense: The sentence indicates that she has driven there many times up to the present. The present perfect tense is used to describe an action that happened at an unspecified time before now. Correct Form of the Verb: The present perfect tense is formed with "has" or "have" (depending on the subject) plus the past participle of the main verb. The past participle of "drive" is "driven." Subject-Verb Agreement: The subject "She" is third-person singular, so "has" is the correct auxiliary verb to use. Therefore, the correct sentence is: "She has driven there many times."

Explanation: Here’s why: Present Perfect Tense: The sentence is in the present perfect tense, indicating actions that have occurred at an unspecified time before now or actions that are incomplete. Negative Form: The negative form of the present perfect tense is constructed with "have not" (haven't) or "has not" (hasn't) followed by the past participle of the verb. Correct Verb Form: The past participle of "clean" is "cleaned." Therefore, the correct sentence is: "I’ve cleaned the kitchen, but I haven’t cleaned the living room yet."

Explanation: Here’s why: Present Perfect Tense: The sentence uses the present perfect tense, which is formed with "have" or "has" followed by the past participle of the verb. This tense is used to describe actions that have occurred at unspecified times before now. Correct Form of the Verb: The past participle of "see" is "seen." The other options ("saw" and "see") are not correct because "saw" is the simple past tense, and "see" is the base form of the verb. Therefore, the correct sentence is: "It’s a great movie. I have seen that movie many times."

Explanation: Here’s why: Question Formation: In the present perfect tense, when asking if someone has done something up to now, the correct auxiliary verb for a third-person singular subject (your brother) is "has." Consistent Verb Use: The response to a question in the present perfect tense should use the same auxiliary verb to indicate that the action has been completed. Subject-Verb Agreement: "Has" is the correct auxiliary verb for "your brother" (he), and it should be used both in the question and the response. Therefore, the correct exchange is: (A) "Has your brother talked to you yet?" (B) "Yes, he has."

Explanation: Subject-Verb Agreement: The subject "She" is a third-person singular noun. In the present simple tense, verbs typically take an "-s" or "-es" ending for third-person singular subjects. Grammatical Structure: In the sentence, "listen" needs to be conjugated to match the third-person singular subject "She." Therefore, "listen" changes to "listens." Correct Form of the Verb: "Listens" is the correct form of the verb "to listen" when used with third-person singular subjects in the present simple tense. Therefore, the complete sentence is: "She listens to music every day."