根据句意及所给中文提示或英文解释，写出句中所缺单词。

51. Mr Green had drunk coffee for many years before he came to China. But now he is used to   ▲    (喝) Chinese tea.

52. To keep fit, we should eat    ▲  (少)food and do more exercises.

53. The Chinese government sent Japan the first batch of materials,   ▲  (包括) blankets and tents on March 14.

54. Do you believe the medicine can    ▲   (预防) the illness.

55. Science is one of my favorite     ▲      (科目). What about you?

56. It is about ten m     ▲    walk from the centre of the city to my school.

57. You can see the    ▲   ( sadness) on her face because she can't find her lovely cat.

根据所给的汉语写出单词，使句子意思完整正确。

51. Our classroom isn’t as clean as     ▲     (平常) after exams.

52. It’s such a    ▲   (令人愉快的) trip that I will remember it for ever.

53. The final-term exam is coming soon. The students are busy    ▲   (准备)for it.

54. Amy is such a clever girl that she learned to cook by     ▲     (她自己) at 8.

55. In my school, students not only work hard, but also take part in all kinds of    ▲   (活动), such as dancing, drawing, reading and so on.

56. The old woman prefers     ▲      (步行) to jogging.

57. Science is one of my favorite     ▲      (科目). What about you?