Question

Fill in the blanks with the correct pronoun . My father , _ is a teacher , is fifty years old ( who / that )
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Answer 1

Answer:

Answer is "WHO"

"THAT" is not used for human beings

Answer 2

Answer:

My father, who is a teacher, is Fifty years old now.

Explanation:

because "THAT" is not used for human being, it used for things.

Hope it helps you.