1 . Whenever he was ________(absorb) in his world of music, he forgot to eat and sleep altogether. (所给词的适当形式填空)

2 . When we say someone is ________(employed), we mean he is out of work. (所给词的适当形式填空)

3 . A county is not a country. What’s the ________(strike) difference between the two words? (所给词的适当形式填空)

4 . Train fares (费用) are likely to remain ________ (change). （所给词的适当形式填空）

5 . The students of the ________ (geology) class will be out on field exploration（所给词的适当形式填空）

6 . Police said there were no ________ (suspect) circumstances about the boy’s death. （所给词的适当形式填空）

7 . Early settlers (殖民者) had to cope with very ________ (原始的) living conditions. （根据汉语提示单词拼写）

9 . To become a ________ (qualify) volunteer, I have made good preparations in advance, trying to know as much as I could about my city, Tianjin. (所给词的适当形式填空)

10 . The students benefitting most from college are those who are totally ________ (engage) in academic life. (所给词的适当形式填空)