Allpossiblemeans，butwecan’tpersuadehimtochangehismind．A．hastriedB．hasbeentriedC．havetriedD．havebeentried
All possible means ，but we can’t persuade him to change his mind．
A．has tried B．has been tried
C．have tried D．have been tried
All possible means ，but we can’t persuade him to change his mind．
A．has tried B．has been tried
C．have tried D．have been tried
All possible means ，but we can’t persuade him to change his mind．
A．has tried B．has been tried
C．have tried D．have been tried
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