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have we received had we received did we receive we have received
will effect have effect would have effected had effected
will effect have effect would have effected had effected
are studying; regret have studied; are regretting have studied; regret have been studying ;have regretted
have known had known knew know
have a word; keep your words have words; keep your word have words; keep your words have a word, keep your word
when; returns where; returns where, will return when; will return
No, we don't Sorry, I don't know Yes, we do OK
your explanation to have your explanation about your explanation having your explanation
your explanation to have your explanation about your explanation having your explanation
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