问题
选择题
__________ the students are doing their maths exercises with the help of the teacher.
A．Three score of
B．Three scores
C．Score of
D．Scores
答案
答案：A
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__________ the students are doing their maths exercises with the help of the teacher.
A．Three score of
B．Three scores
C．Score of
D．Scores
答案：A
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