楼主,你应该是打错了,应该是tried out ,（实验,尝试）不是tire out（筋疲力尽）
假设是tired out ,那以上三个答案都说不通 ,个人感觉有D答案是 been tired out最好
tire out 精疲力尽,使XX很疲惫,XX一般指人,例如工作使人很累,但不能说使工作很累
另外结合语句,应该是tried out,实验,尝试,答案B,二楼已经说的很清楚了.就是固定搭配,后面接名词
We will not know the plan works till we have _ A tired out i
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