被动语态的（它自己结束了）：My mid-term exams had been finished.
主动语态的（由你结束）：I had finished my mid-term exams.
都是过去完成时态。
My mid-term exam has been over.
My mid-term exam is over.
my mid-term exam has been finish
My midterm exam is over
My midterm is over
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