English, asked by adityawategaonkar389, 9 months ago

Convert the following into Past Perfect Continuous Tense.

India ................ (invent) vaccine on Covid 19. *

has been inventing

have been invented

had been invented

had been inventing

Answers

Answered by harsh3451

0

Answer:

hey mate option 2 is correct

had been inventing

Answered by Amrishaverma

2

Answer:

Option (a) is correct...

India has been inventing vaccine on Covid 19.

Mark as brainliest Please....

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