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although hope improve good serious
46. Two heads are ________than one.
47. There is now ________of a cure.
48. I'm going to ________my spoken English this year.
49. Pollution is a big problem. We must take it______.
50. ________many students have computers, they don't use them for homework.
参考答案:46. better 47. hope 48. improve 49. seriously 50. Although