His mother ironed his shirt after he ___ his clothes
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changed
-
changing
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have changed
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None of the above
A
Correct answer
Explanation
The sentence describes a sequence of past events using past tense ('ironed'). The 'after' clause needs past simple ('changed') to show one completed past action followed by another. 'Changing' would be continuous, 'have changed' is present perfect - neither fits this past narrative.