Sentence Correction (SC) | Re: Neanderthals had a vocal tract that resembled those of the apes and so

Hellosantro789 ,


I will be glad to help you with this one.


The helping verbs have, has, and had act as a perfect tense verbs only when they are followed by another verb in its past participle form. Take a look at the following sentences:

Theyhave bought the movie tickets.
...

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