I feld sad because my friends' work ___(had/has) been firm?

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Ifeldsadbecausemyfriends''work___(had/has)beenfirm?Ifeldsadbecausemyfriends''work___(had/has)beenfirm?

I feld sad because my friends' work ___(had/has) been firm?
I feld sad because my friends' work ___(had/has) been firm?

I feld sad because my friends' work ___(had/has) been firm?
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