24. Why haven，t you taken it down? I think you                 when I asked you to. (listen)

你為什么沒有做筆記？我想你當(dāng)時根本沒聽我的要求。

23. Never in my life        such a fascinating scene. (enjoy)

我一生中從未欣賞過這么迷人的風(fēng)景。

22. By the time                ，I will have finished reading  the book. (come)

到他回來時，我將讀完這本書了。

21. Had it not been for the fact                 ，I wouldn't have won the first prize in the English Writing Competition. (help)

要不是我的老師幫助我，我就不會在英語作文竟賽中獲得一等獎了。

20. The product produced by Apple, especially iphone 5 ，              in the US and have a good market internationally. (sell)

蘋果公司生產(chǎn)的產(chǎn)品，尤其是iphone 5，在美國很暢銷，在國際上也擁有良好的市場。

19. I'm afraid I can't attend your birthday party at 5 p.m. next Monday. I                to London long before that, (fly)

恐怕我不能參加你下周一下午5點鐘的生日聚會了 在那之前很久我將已乘飛機飛往倫敦了。

18. They               but demands nothing in return, which moves me a tot. (hand)

他們總是幫助我卻不要任何回報，這使我非常感動。

17. The subject        in the general meeting of shareholders until the workers threatened a strike. (come)

直到工人威脅要罷工，這個話題才在股東大會上提了出來。

16. Tm afraid you'd better not call me at 3 o'clock on the afternoon tomorrow. I            then. (have)

你最好不要在明天下午3點鐘給我打電話。那時我在開會。

15.                the eco-travel and you will find it will help you understand the importance of nature. (part)

參加生態(tài)旅游，你會發(fā)現(xiàn)其將有助于你了解自然的重要性。