get

catch

meet

achieve

conducting

carrying

composing

concerning

Peter didn't run in a marathon race when he was 18 years old.

Peter used to run in a marathon race when he was 18 years old.

Peter hasn't run in a marathon race since he was 18 years old.

Peter has run in a marathon race since he was 18 years old.

invented

is invented

has invented

was invented

preference

attraction

advantage

importance

friends

online gamers

their teammates

online-only friends

Boys are more likely to meet new friends than girls.

Most teens are not easy to give others their usernames when making new friends.

The majority of teenage users agree that social media has negative consequences in their lives.

Thanks to social media, more than two thirds of teens are supported when they face with challenges in their lives.

Social media affects friendship too much.

Teenagers are making and keeping friends in a surprising way.

The difference of making new friends between girls and boys.

Social media connects friendship.

That's life

That's all right

That's not quite true

I can't agree more

made a lot of people satisfied

made a lot of people annoyed

made other people disappointed

made other people nervous