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agreed with ismi puji...... she is right.
Trying to correct this question text as follow:
Notice at a shop: We sell CDs, DVDs, books and radios. Anything you notice not right with this punctuation?
no need to put appostrophes
Ismi has it exactly right there is no need for the apostrophes, the abbreviations and the words are plural no more than that!
I agree with Ismi
The correct radio's,