Choose the correct
explanation
They are
considering changing all their software to Open Source.

Question

Choose the correct
explanation 
 They  are
considering  changing all their software to Open Source.

Accepted Answer

an action of a relatively short duration that is
taking place at or around the moment when we are  speaking

Answer

an ongoing situation that had existed for some
time before at a specific moment in the past  action or event

Answer

an ongoing situation that began before the
moment when we are  speaking  and that has continued uninterrupted until now

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