依次填入下列各句横线处的词语，最恰当的一组是( )　　①为了保护消费者权益，维护市

Read the following materials, and from A, B, C and D, choose the one that is suitable for the demands of each person from 77 to 80
Sam, Mr. Read, Miss Hope and the Kings each want to decide on an advertisement to answer. Read the following descriptions and help them make proper choices.
(   ) 77. Sam will spend his holiday in Hawaii where there is lots of sunshine. Maybe he needs to buy something to protect his eyes.
(   ) 78. Mr. Read has been out of work for weeks, and he feels very upset and don’t know what to do.
(   ) 79. Miss Hope is always ready to help others. She is a nurse and can speak good English.
(   ) 80. The Kings have just moved into a new house. They need to buy something to clean the floor and the carpet.

A．Dear Mrs. Web Dear Mrs. Web provides free personal advice and opinions for you. She receives and answers worldwide email questions. She will offer you some new suggestions on your problems, like study stress, disinterested friend... Dear Mrs. Web welcomes all questions and comments. You can receive the reply usually in 48 hours. Her email address is mrsweb@advice.com. B．Help Line Volunteers Every year thousands of old people are in need of our help. The Help Line provides a heartwarming, helpful, kind support and information service for the English aged people. We are in need of volunteers who are: warm-hearted and patient can work 10 hours every week Please call us at 0241-85902 or email us. helper@lineservice.com C．The King Sweeper “My great, great grandfather invented the carpet sweeper 125 years ago. This King Sweeper is by far the best. I invite you to try it in your home. You’ll find it used daily in hospitals, restaurants, offices and homes throughout the world. This is just the thing to keep your carpet soft, clean and fresh. Only for $19.99! D．Trendy Sunglasses They can protect your eyes when driving, gardening or reading in the sun. It can make your life easier and happier, and make you look smarter! $10.99 each or 2 for $19.99!