Sentence Correction (SC) | Re: Not only speech enables man to handle and pass on more complicated ide

Not only speech enables man to handle and pass on more complicated ideas, it also enables him to accumulate them.

replace it with speech and it becomes:

Not only speech enables man to handle and pass on more complicated ideas, speech also enables him to accumulatethem.

Not only "subject" ---- also"verb"

Since also part is not underlined. Therefore,
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