Fill in the blanks with a preposition to form the right phrasal verb.
1. act up = to behave awkwardly or badly, 2. answer (sb) back to speak rudely to sb
3. answer back = to defend oneself, 4. answer for = to be responsible for sth
5. answer to = to be under the command of sb, 6. back down = to cease to oppose
7. back out of = to withdraw from, 8. back up = to support
9. be beneath sb = to be demeaning, 10. be down on = to be hostile to sb
11. be down with = to be ill (with a disease), 12. be in for it = to be about to receive punishment/trouble
13. be in with = to be in favour with; share secrets with, 14. be into = (informal) to take an interest in sth
15. be off = (1) to cease to want or be interested in sth, (2) to have come loose, detached from sth
(3) to stay away from work/school (4) to cancel (5) to be bad, unhealthy ( food)
16. be on = to be shown on television, at the cinema etc
17. be out = (1) to be in bloom (2) to be extinguished (3) to be removed
(4) to be absent (from home or work) (5) to be wrong in calculation (6) to be unfashionable
18. be up to = (1) to do (2) to depend on, 19. bear on = to be relevant to
20. bear with = to tolerate