Động từ To Be — Phủ định & Câu hỏi
Bước 1/5 — Ngữ liệu
Oscar Wilde — The Importance of Being Earnest (1895)
"Are you really Earnest?" she asked. "I am not who you think I am," he replied. "Then who are you?" "That is not important." "Is this some kind of joke?" "No, it isn't. I am serious. And you are not listening."