A sentence can need revision when the subject and verb do not agree.
<h3>What is revision?</h3>
Revision involves writing a particular word in a new way.
This can be done to add some keywords that are missing or modify a particular sentence to include appropriate verb.
Therefore,
A sentence can need revision when the subject and verb do not agree
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Answer: what BOOK IS THIS QUOTE FROM?
Explanation:
Something known by a lot of people, is " common " knowledge.