21. ______ the course very difficult, she decided to move to a lower level.

（ ）53.Dan is interested in taking wildlife photographs and enjoys the kind of programme which gives him a chance to see a professional photographer at work.

（ ）55. Ron’s wife is in hospital. He wants to finds a programme suitable for his three-year-old son while he gets on with the housework and prepares a meal.

62.大多数父母所关心的是，尽可能为孩子提供最好的教育。

36. Dr. Aiken cut the background from the photos for the purpose of______.

66. China will develop its economy further and open itself wider to the outside world, which offers more business opportunities to overseas enterprises. Since China‘s reform and opening up, Chinese enterprises have been cooperating with overseas enterprises in terms of the economy and technology, and have scored great achievement. Overseas enterprises have not only helped Chinese enterprises with their growth, but also benefited from the cooperation. The Chinese government will continue to offer favorable policies and conditions to promote the further cooperation between Chinese and overseas enterprises.

20. Please send us all the information ______ you have about the candidate for the position.

65.可能你公司正面临一些我们不了解的困难。

3.

2.

26. Being unique should be encouraged because that’s ______ makes our society a society. 

57.众所周知，贸易和专门化相辅相成，使我们每个人能使用更多的产品。