1、 问题:No one knows the reason of Helen’s ___.
答案: 【absence 】
2、 问题:I tried hard to ____ myself to the new environment.
3、 问题:My father was __ as a candidate.
4、 问题:The __ of my brother was to become a president.
5、 问题:I joined an ______ activity yesterday.
6、 问题:Frank is the __ of this building.
答案: 【architect 】
7、 问题:My brother enjoys reading Mark Twai