1 . I ________ calligraphy when I was in the university，so I am confident that I can be a qualified volunteer.(major)
我在大学主修书法，因此，我相信我能够成为一名合格的志愿者。

2 . As soon as their parents came in,the twin sisters ________. (calm)
她们的父母一进来，这对双胞胎姐妹就安静了下来。

3 . Chinese tea-drinking culture has a long history which ________ more than 1,000 years ago. (date)
中国饮茶文化源远流长，可以追溯到1000多年前。

4 . ________ a true story, the film moved its audience to tears.(base)
建立在真实故事的基础上，这部电影使观众感动得落泪。

5 . The official ________ the firefighters several times at the meeting.(refer)
这名官员在会议上几次提到消防人员。

6 . ________ that I can work out with other athletes in the stadium.
我突然想起我可以在体育馆和其他运动员一起锻炼。

7 . ________ Chinese writing system, we thought it of great importance. (regard)
关于中文书写系统，我们认为它非常重要。

8 . The guy was determined not to ________ his father’s wishes.(go)
这个小伙子决心不违背他父亲的愿望了。

9 . If I am accepted as your teaching assistant, I will ________ to perform my duties.(effort)
如我被接受为您的助教，我将不遗余力履行我的职责。

10 . Being a champion in the Olympic event, I feel greatly honored to ____________ (发表演讲) here. (deliver) (根据汉语提示完成句子)