Question

he became blind at the early age of 3 frame WH question and underline part is at the early age of 3 ​

Answer 1

Answer:

When did he became blind?

Explanation:

This answer indicates the time.

Therefore, The question frames from "When".

And the question indicates the past.

Therefore, the question contains "did".

Answer 2

Answer:

When did he became blind?

Explanation:

Because 'early age of 3' is showing 'time'

and we use 'When' to answer a question related to time

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