单项选择题
I（）you that Mary's back yesterday but I forgot all about it.
A．should have told B．ought to tell C．had to tell D．should tell
单项选择题 I have never been to Rome. But that's the city（）
单项选择题 It was not until she arrived home（）remembered her appointment with her friend.
单项选择题 The water is not fit（）
