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What is the present perfect progressive tense of the verb ''to investigate''.

Detectives _____ for months.

A.
have been investigating

B.
investigate

C.
were investigating

D.
have investigated

Respuesta :

Charzie
A. Have been investigating
Pretty sure that's it.
amayacbeau
The present perfect progressive tense of "to investigate" is A. have been investigating.

The present perfect progressive tense indicates a continuous action that is either still occurring or was completed in the past. 
"has been" + present participle

Hope this helps! :)

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