日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

---Listen! Is Miss Smith giving a speech in the class?

---No，it ________ be her．She has gone to Hong Kong．

A．may not                  B．mustn’t                  C．can’t              D．needn’t