问题描述：
We go to school every day e---- Saturday and sunday
I"msorry to tell you that she f--- the exam
This is a s--- problem
There are at l---- three thuosand studens in our school
The temperature will f---below zero in the nighet
I"msorry to tell you that she f--- the exam
This is a s--- problem
There are at l---- three thuosand studens in our school
The temperature will f---below zero in the nighet
问题解答：
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