16．21．Sherry is going to visit Quebecnext autumn． 22．The St．Lawrence Riverruns through the middle of the city，Montreal． 23．Bob tells Sherry that she'd better practisespeaking French before she goes there． 24．Sherry will also visit a friendfrom college who lives in Quebec City． 25．Many old buildings in Quebec City were built in the18th/eighteenthcentury．
15．15．An old couple went to their doctor because they were seriously ill． 16．The doctor told them to write things down in order not to forget． 17．The old lady told her husband to get her a bowl of rice after they got home． 18．The old lady told her husband to write something down．but he refused． 19．The husband could remember clearly what to do before he went to the kitchen． 20．From the story we can learn that the old lady was less forgetful than her husband．
14．A．They can buy vegetables together． B．They can go out for dinner that day． C．He has never eaten in that restaurant． D．He disliked the food the woman cooked．
