1–b: I never text my friends on the phone. It’s expensive.
2–f: I often surf the Internet for school projects.
3–c: It’s good to chat online with my friends.
4–e: I often download songs onto my smartphone.
5–a: I don’t usually talk friends at school.
6–d: My parents send emails, but I don’t!
Правильное грамматическое сочетание для пункта 5, вероятно, должно быть «I don’t usually talk to my friends at school»; в напечатанном варианте после «talk» отсутствует «to my».