Only four days remained ____ the exam.    

There was a blind girl who hated herself because she was blind. In fact, she 41 nobody except her boyfriend, for he was always 42 to help her. She used to tell her boyfriend, “If I could see the 43 , I would marry you. ”

　 One day, someone donated a pair of 44 to her. When the bandages（繃帶）came off, she was able to see everything, including her boyfriend, for the 45 time. He asked her, “Now that you can see the world, will you 46 me?” The girl looked at her boyfriend and was greatly surprised to see that he was 　47 . She had never expected that．She would not like to be with a blind husband for the rest of her life，so she 48 to marry him．

Her boyfriend left in tears and a few days later wrote a 49 to her，saying，“My dear，take good care of your eyes． 50 they are yours. They were mine.”

　 This is how the human brain（人腦）often works when our status（地位）changes．Only a very few remember what 51 was like before．And we often ask for more than we need．Life is a gift. Today, before you complain about the 52 of your food，think of someone who has nothing to 53 . Before you complain about life，think of someone who went to heaven（天堂）too early. Before you complain about your old 54 , think of the people who are living in the streets．And when you are tired and complain about your job, think of those who have no jobs．So 55 what you have and don’t forget your past.

--Did Mike have a good time at the party?

--Yes．He said that it was years          he had enjoyed himself so much．

A．a(chǎn)fter                    B．since                   C．before                    D．when