_______the end of last term,everybody here in the school ,I think,has taken at least eight maths tests. A.by B.since C.from D.at 为什么不选D

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_______the end of last term,everybody here in the school ,I think,has taken at least eight maths  tests. A.by B.since C.from D.at 为什么不选D

_______the end of last term,everybody here in the school ,I think,has taken at least eight maths tests. A.by B.since C.from D.at 为什么不选D
_______the end of last term,everybody here in the school ,I think,has taken at least eight maths tests. A.by B.since C.from D.at 为什么不选D

_______the end of last term,everybody here in the school ,I think,has taken at least eight maths tests. A.by B.since C.from D.at 为什么不选D
这道题应该选a,因为题目是,(直译)
_____了期末,所有在这个学校的学生,我认为,至少考了八次数学考试.
这么说就是,这个学生是有统计在某段时间内,考了几次数学.所以应该表示的是一个时间段.

A
at the end of 动词要用一般时态
by the end of “截止到……”动词用完成时态
has taken 完成时,因此选A

At the end of last term后应用时态为一般过去时。而题目中用的是完成时态,所以不能。

A,联系句意:我认为,直到上学期期末,学校的每个人至少花了八个月。