Vamos analisar cada uma das opções para identificar qual apresenta todas as frases corretamente escritas em relação ao uso de Tag Endings. Opção A: 1. They were having dinner when you arrived, weren’t they? (Correta) 2. I should walk faster, shouldn’t you? (Incorreta - deveria ser "shouldn't I?") 3. Your parents are traveling abroad, weren’t they? (Correta) 4. Nobody can come in, can’t they? (Incorreta - deveria ser "can he/she?") 5. She is an engineer, is she? (Incorreta - deveria ser "isn't she?") Opção B: 1. You didn’t do your English homework, did you? (Correta) 2. Her sister went to school by bus yesterday, didn’t she? (Correta) 3. They shouldn’t come so late today, should they? (Correta) 4. You are traveling this afternoon, aren’t you? (Correta) 5. It is raining a lot in California, isn’t it? (Correta) Opção C: 1. My grandparents are having their 50th wedding anniversary tomorrow, haven’t they? (Incorreta - deveria ser "aren't they?") 2. My nephew is learning how to play the piano, isn’t she? (Incorreta - deveria ser "isn't he?") 3. My father doesn’t like to watch soap operas, does he? (Correta) 4. My neighbor John is moving to another apartment downtown, isn’t he? (Correta) 5. She is a new student here, isn’t she? (Correta) Opção D: 1. They don’t know how to play the guitar, do they? (Correta) 2. She is sending her farmhouse, aren’t you? (Incorreta - deveria ser "aren't you?") 3. It has been years since we talked to each other, hasn’t it? (Correta) 4. My maid is cooking dinner now, isn’t she? (Correta) 5. The reporters are asking those people what happened, are they? (Correta) Opção E: 1. You could stay longer with me, couldn’t you? (Correta) 2. We have made a great decision, haven’t they? (Incorreta - deveria ser "haven't we?") 3. She is answering all her e-mails now, isn’t she? (Correta) 4. He had gone away, hadn’t he? (Correta) 5. They shouldn’t go now, shouldn’t they? (Correta) Após a análise, a única opção que contém todas as frases corretamente escritas em relação ao uso de Tag Endings é a Opção B.