32.He apologized_having to leave so early.

29.This stick is_that one.

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45.Why did the young man like to go to Howard Johnson’s ？

61. 中国的丝绸产品比世界上任何其他国家都要多。

37.Who will most probably take care of the middle-aged Americans when they need care themselves ？

57. 金属有许多有用的特性 , 其中强度是最重要的。

34.I must decline it because the conditions you offered are not_.

17.I was very tired.Otherwise, I_ the theatre with you for the new film.

58. 许多美国人依靠信用卡生活 , 他们的生活质量用他们能够借到多少钱来衡量 , 而不是他们能够挣得多少。

23.Jack worked late into the night, _he had not finished even half of the job.

62. 不论她如何说 , 我也不相信这个消息。