QUESTION: Fix punctuation: Entertainment is provided in July and August Each apartment has a private entrance a kitchenette and a bathroom with shower
ANS: Entertainment is provided in July and August. Each apartment has a private entrance, a kitchenette and a bathroom with shower.
QUES: The first thing that struck me was the silence

correct the punctuation.

CORRECTED: The first thing that struck me was the silence.
Question: These exercises can be performed by individuals as in the intray and roleplay exercises or in groups
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Answer: These exercises can be performed by individuals as in the in-tray and role-play exercises or in groups.
Lowest price available 13

Can you repeat this sentence, but add in punctuation?
Lowest price available: $13
input: A manufacturer of 3x5 watts G SERIES at GuangDong China
fixed: A manufacturer of 3x5 watts G SERIES at GuangDong China.
In the case that your V file doesnt open it is highly likely that you do not have the correct software application installed on your PC to view or edit V file extensions

Can you repeat this sentence, but add in punctuation?
In the case that your V file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit V file extensions.