<p>Every student (at the party) tried (to look) (their) (best).</p>
<p>A) at the party
B) to look
C) their
D) best
E) no error</p>
<p>I thought "no error" because I thought there was no problem with the sentence but the answer is "their".
Is it wrong to replace "his or her" with their?</p>
<p>It is correct to replace “his or her” with “their” because “student” is singular, and must have a singular pronoun “his or her” to match it.</p>
<p>when you use “every” or “any” you have to use a singular pronoun</p>
<p>Their is wrong because it’s a plural word form. His or her works better.</p>