The recommended way is to study only the topics tested by the GMAT.
The Manhattan GMAT Sentence Correction seems to be a favorite.
Also, this user posted her notes(link) that are essentially the MGMAT SC book..
https://www.beatthegmat.com/my-sc-notes- ... t9473.html
In addition, you can search down the page a bit and download Spidey's sentence correction notes.
Between the two of those you really don't need a book.
HTH
pls, help, pls, help
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Source: Beat The GMAT — Sentence Correction |

















