A: “Do you know how old I am?” - B: A. Happy birthday B. I couldn’t help it C. Don’t mention it D. I haven’t a clueĐoạn văn24/97A: “Do you know how old I am?” - B: “_______ .”Happy birthdayI couldn’t help itDon’t mention itI haven’t a clueGiải thíchĐáp án: D