1 . My best friend Julia will come to see me next July, __________ she won’t be so busy. (用适当的词填空)

2 . Sometimes we had to work until the early hours of the morning, ________most people were still fast asleep. (用适当的词填空)

3 . China has Mid-Autumn Festival, ______ people admire the moon.(用适当的词填空)

4 . In China there is the Mid-Autumn Festival, _______ people admire the moon apart from enjoying mooncakes. (用适当的词填空)

5 . Circumstances changed in 1933, _______ Hitler came to power in Germany. (用适当的词填空)

6 . 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)

7 . 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)

8 . 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）

9 . No one in modern times knew about the tomb until 1974, ________ some farmers discovered it while digging a well. (用适当的词填空)

10 . Millions of people died in the early 19th century, ________ an outbreak of cholera hit Europe. (用适当的词填空)