<p>I am taking the SAT tomorrow. Please help me out! Thanks in advance!</p>
<p>This is from Gruber's
A great many students from several universities (are planning to, if the weather is favorable, attend next Saturday's mass rally in Washington)</p>
<p>According to Erica Meltzer, this sentence should be grammatically correct. But Gruber's said the answer should be</p>
<p>A great many students from several universities (are planning to attend next Saturday's mass rally in Washington
, if the weather is favorable.</p>
<p>Why is the original sentence WRONG????</p>