2012-05-02 09:00:56

When the students in Mr. Greco's class take a field trip to Mount Vernon next week, they will learn interesting facts they did not previously know about our first president.

(A) they will learn interesting facts they did not previously know about our first president.
(B) they will learn interesting facts about our first president that were unknown to it before the visit.
(C) the class learned interesting facts it did not previously know about our first president.
(D) the class will learn interesting facts about our first president that were unknown to them before the visit.
(E) they learned interesting facts about our first president that the class did not before.

The correct answer is A

Explanation: There is no error in this sentence. The plural pronoun "they" agrees with its clear antecedent, "students," in number and case (eliminating answers B, C, and D, which correct an imagined pronoun error). Additionally, the future verb phrase "will learn" is appropriate here, since the sentence refers to a trip that has not yet happened (eliminating answer E which imagines a verb tense error).