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This mathematic problem was so difficult that no student and no teacher ______ a
This mathematic problem was so difficult that no student and no teacher ______ a
游客
2024-10-28
16
管理
问题
This mathematic problem was so difficult that no student and no teacher ______ able to solve it.
选项
A、were
B、is
C、was
D、are
答案
C
解析
..and each...,every...and every...,many a...and many a...和no...and no...这样的结构之后,谓语动词应该用单数形式。
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