<p>I did well in the blue book grammar section, but I feel difficult when dealing with the OC grammar section. So can someone recommend some good grammar book that is systematic and can tell you some rules? Thanks!</p>
<p>Hey there, what do you mean when you say “OC” grammar section? I’m used to hearing them as sentence improvements, error ID, and improving paragraphs.</p>
<p>hope I can help!</p>
<p>Well…I mean the Online Course</p>
<p>you can use Peterson book to improve your grammar.</p>