Ответ:
- 1. Riding is getting too expensive; I'll have to give it up.
- 2. Tom gave back all the books he had borrowed.
- 3. We gave away all my old toys to the neighbours" children.
- 4. Give out the copybooks, please.
- 5. After several days of freedom, the escaped prisoner gave himself up to the police.
Обоснование: Использованы подходящие предлоги для формирования фразовых глаголов: give up (бросить), gave back (вернуть), gave away (раздать), give out (раздать), gave himself up (сдаться).