SAT grammar questions

marvin100
Thu, 08 Jan 2015 22:59:23 +0000

1. "Aloe vera is a succulent plant" "from whose leaves" "are extracted a gel" -- what's the subject of "are"? What "are" extracted? The answer is "gel," which is clearly singular. In other words, "a gel is extracted from the leaves of a succulent plant called Aloe vera." It's an inverted clause, but it's a simple subject-verb error.