Correct the mistakes in 27–30. There is one mistake in each.
(27) I’ve ever been on TV.
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(28) You have written a letter to a newspaper?
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(29) I’ve never spoke in public.
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(30) Have you ever call a radio programme?
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27. I've never been on TV. . 28. Have you written a letter to a newspaper?29. I've never spoken in public. 30. Have you ever called a radio programme?