Writing question

Test Preparation
1

<p>The series of letters that Margaret wrote to her father contains a valuable commentary on the prevailing social conditions and attitudes that lead to her leaving home at such a young age. No error.</p>

<p>Shouldn't it be contain instead of contains? The right answer was E-no error, but the verb doesn't seem to fit with the subject (The series of...)</p>

2

<p>Series is singular: "The series contains . . . " It's the "of letters" that is confusing.</p>

3

<p>ok thanks, the series being singular was what i was unsure about.</p>