Mary is the only one of the students in our class who ____ to the Great Wall so far. A. is B. has be...
2023-01-23 21:16:20 210次 2010年黑龙江省高一上学期期中考试英语卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Mary is
the only one of the students in our class who ____ to the Great Wall so far.
A. is B.
has been C. are D.
had been
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