C
反间疑问句,对前面的事实提出翻译疑问句。所以是isn't it.
解析:
在反意疑问句中,对于复合句的反意是通常情况下根据主句相反(当主句中主语为I/We,谓语动词为think, be afraid, be sure, expect, suppose等,属于特列,这时要反从句 )。
此题中就是普通的复合句实际是It's the first time (that) she has been to the United States.也就是说It's the first time是主句部分,所以反意疑问句中要根据主句部分反意,所以选C
温馨提示:答案为网友推荐,仅供参考