英语选修6译林牛津Unit 2基础训练题（答案）【江苏专用】
Ⅰ.用所给词的适当形式填空
1．(1)We are all concerned about her safety because she hasn't come back from her journey yet.
(2)There is some cause for concern but no need for alarm.(concern)
2．(1)After two hours' frustrating delay，our train at last arrived.
