完形填空
The passengers on the bus watched with sympathy as Susan made her way carefully up the steps. She paid the driver and then, using her hands to feel the seats, settled in one of them. It had been a year since Susan became blind. As the result of an accident she was suddenly thrown into a world of darkness. Susan's husband Mark watched her【C1】______into hopelessness and he was【C2】______to use every possible means to help his wife. Finally, Susan felt ready to return to her job, but how would she get there? She used to take the bus, but she was now too frightened to get around the city by herself. Mark volunteered to ride the bus with Susan each morning and evening【C3】______she could manage it by herself. For two weeks, Mark accompanied Susan to and from work each day. He taught her how to rely on her other【C4】______, specifically her hearing, to determine where she was and how to a-dapt to her new environment. At last, Susan decided that she was ready to try the trip【C5】______Monday morning arrived. Before she left, she hugged her husband【C6】______her eyes filled with tears of gratitude (感激). She said good-bye and, for the first time, they went their【C7】______ways. Each day went perfectly, and a wild excitement took hold of Susan. She was doing it! On Friday morning, Susan took the bus to work as usual. As she was getting off the bus, the driver said, "Miss, I sure【C8】______you. " Curiously, Susan asked the driver why. " You know, every morning for the【C9】______week, a fine-looking gentleman in a military uniform has been standing across the corner watching you until you enter your office building safely ," the bus driver said. Tears of happiness poured down Susan's cheeks. She was so lucky for he had given her a gift more powerful than【C10】______, that is the gift of love that can bring light where there is darkness.