Verbal problems from the *free* official practice tests and
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RonPurewal
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Re: SC: Possible long-term consequences of the “greenhouse

by RonPurewal Wed Dec 24, 2014 7:05 am

the gmat will never test the presence or absence of "a"/"an"/"the" (...which would have no effect on parallelism even if it were tested).
so, this is a non-issue.