Questions 16 to 19 are based on the passage you have just heard.

单项选择题A．Studying for a degree in French.B．Working as a secretary.C．Taking management courses.D．Teaching English at a university.

单项选择题A．They may have to continue to work in old age.B．They may have nobody to depend on in the future.C．They may regret the time they wasted.D．They may have fewer job opportunities.

单项选择题A．Forbidding students to take food out of the restaurant.B．Requesting customers to pay before taking the food.C．Asking customers to leave their bags on the counters.D．Allowing only two students to enter at a time.

单项选择题A．He often teaches children what to do during a fire.B．He teaches Spanish in a San Francisco community.C．He provides oxygen masks to children free of charge.D．He travels all over America to help put out fires.

单项选择题A．She has to go to see a doctor.B．She got hurt in an accident yesterday.C．She is black and blue all over.D．She stayed away from work for a few days.