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All possible means . However, nothing can him dying of lung cancer.A．has tried; stopB．have been tried; keepC．has been tried; preventD．have been tried; stop 【查看更多】

 

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All possible means ________. However, nothing can ________ him dying of lung cancer.

[　　]

A．has tried, stop

B．have been tried, keep

C．has been tried, prevent

D．have been tried, stop

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All possible means ________. However, nothing can ________ him dying of lung cancer.

[　　]

A．has tried, stop

B．have been tried, keep

C．has been tried, prevent

D．have been tried, stop

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All possible means _________．However, nothing can _________ him dying of lung cancer．

[　　]
A．

has tried; stop

B．

have been tried; keep

C．

has been tried; prevent

D．

have been tried; stop

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