Choose the correct
explanation
We were doing
research for a new system when our main competitor suddenly launched something
very similar.

Question

Choose the correct
explanation 
 We  were doing 
research for a new system when our main competitor suddenly launched something
very similar.

Accepted Answer

an ongoing situation that existed for some time
but that was interrupted by another action or event

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

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