They have the right to check ______ the will is valid(有效的), of course. A. whether B. why C. when D. ...
2023-01-05 07:31:18 23次 甘肃省2010届高三下学期第三次模拟考试试卷（英语） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
They
have the right to check ______ the will is valid(有效的),
of course.
A. whether B.
why
C. when D. how
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