Directions: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with word or phrases that best fits the context.
People often fall ill because of me.  36    , they can hardly blame me; it is largely their own 37____ .A tired person may get caught, especially when he goes to crowded places with polluted air. A sudden change in 38    is another factor. In hot summer, people turn on the air-conditioner upon returning home. They will catch a cold easily.
My latest victim is an energetic student. After school, he played football hard for two hours. Though 39   , he still went to the cinema .Then he got back home and took a cold shower immediately.
I seized this golden chance to attack him .He reacted, trying to 40    me, but I was already reproducing deep in his throat. He kept sneezing and his nose was running. 41   he put on some warm clothes, it didn’t work, for there were too many of us. Besides, his sore throat kept   42   him, and he developed a cough to force me and my family out, but  43   .
The next day he couldn’t go to school He had lost his appetite and was not as 44   as before. His mother made him orange juice every few hours for more vitamin C, which would help his recovery.
For two days he was nursed by his mother. As he rested more, his defense strengthened and I began to feel the 45   . I knew I had to leave him before long. But I am not the one who gives up easily, and I made every effort to fight back. Unfortunately, it was my turn to feel 46    now, for his defense system was starting an all-out attack against me. I became 47    and finally my time was over.
Do you know what I am?
36. A .Therefore       B. Besides        C. However      D. Then
37. A .business         B . responsibility      C. excuse D. fault
38. A. temperature B. season          C. place    D. condition
39. A. excited  B. hurt      C. late      D. tired
40. A. get on with    B. get rid of      C. put up with  D .take hold of
41. A. Since      B. Once    C. Whether      D. Although
42. A. reminding      B. upsetting     C. comforting  D. influencing
43. A. escaped          B. succeeded   C. regretted     D. failed
44. A. peaceful         B. afraid   C. active  D. happy
45. A. loss         B. operation     C. pressure      D. movement
46. A. painful   B. disappointed        C. nervous        D. ashamed
47. A. bigger    B. weaker         C. smaller         D. stronger