18._before we leave the day after tomorrow, we should have a wonderful dinner party.

39.Which of the following is NOT a reason why people look after their relatives ？

29.This stick is_that one.

57. 金属有许多有用的特性 , 其中强度是最重要的。

[img=28579568094.png] [img=18097399267.png]

59. 直到大学毕业 , 他才意识到社会实践的重要性。 

42.The young man was not found to be illiterate until_.

26.He_to see you yesterday, but he had an important meeting to attend.

38.All caregivers believe that they_.

21.Where do you normally have your hair_？

25._more time, she would certainly have done it much better.

61. 中国的丝绸产品比世界上任何其他国家都要多。