1 . I bought a great many books, __________ which I spent all my money that I had saved. （用适当的词填空）

2 . This is the factory __________ you visited the other day. （用适当的词填空）

3 . Now there _________(exist) a tough issue, so all of us work day and night to solve them. (所给词的适当形式填空)

4 . Is it the first time in a year and a half that Sally ________ (make) such great progress? (所给词的适当形式填空)

5 . Julie was good at German, _______ she spoke fluently. (用适当的词填空)

6 . I will never forget the days ________ we enjoyed ourselves in Beijing. (用适当的词填空)

7 . Two thirds of the people who lived there _________(be) dead or injured. (所给词的适当形式填空)

8 . They were impressed by the schools ______ they had visited in the poor village and decided to help them.(用适当的词填空)

9 . If someone ________ (promote), he will be given a more important job or rank in the organization that he works for. (所给词的适当形式填空)

10 . Some strange customs ________ (survive) in the past 100 years. (所给词的适当形式填空)