The percentage of both male and female teenagers who have had sex is <u>
less than</u> it was previously, so it is <u>false</u> that teenagers having sex is on the rise.
The percentage of male and female teenagers who have had sex is <u>less than</u> half, so it is <u>false</u> that most teenagers have had sex.
Annie should <u>stay true to</u> her decision to remain abstinent.