3 . His interest started a few years ago, ________ he was in college and studying wildlife science. (用适当的词填空)

4 . There is usually an interval between the first half and the second half of the football match, ________ (那时教练可以指导球员如何比赛)．(根据汉语提示完成句子)

5 . He came to public attention during the 1960 Rome Olympics, _______ he won the light heavyweight gold medal for the USA, _________(demonstrate) great talent and personality in the process. (用适当的词填空)(所给词的适当形式填空)

6 . There is evidence ________ acupuncture ________ (date) back to the Stone Age, ________ stone tools called bian were used to press areas of the body. (用适当的词填空) (所给词的适当形式填空)

7 . A major breakthrough in AI came in 1997, _________ Deep Blue, a chess-playing computers, beat the world chess champion Garry Kasparov. （用适当的词填空）

8 . This temple was first built during the Qin Dynasty. (用定语从句合并/改写句子)
→The time ____________ was during Qin Dynasty.

9 . He will put off the picnic until May 1st，________.
他将把野餐推迟到5月1号，那时他将有空。

10 . The sports meeting will be put off till next month,________ we will have made full preparations. (用适当的词填空)