Помогите ответить на тест
Find the mistakes.

20. Ellen will go back (1) to work as soon as she will find (2) a job she likes and feels (3) she can do (4) well.

21. Mark changed job (1) two more times to accept (2) jobs (3) with increasing (4) responsibility.

22. In (1) the production of automobiles management gave (2) directions to workers (3) who do (4) research and development.

23. Many people enjoy working (1) on a college campus where they can be associated (2) with those who are interested (3) in learning and improving themselves (4).

24. It appeared that Jonathan was offered (1) a post as (2) assistant lecturer in (3) English literature in one of the new northern universities (4).

Большое спасибо

20 -2 (должно быть as soon as she finds)21-1 (должно быть changed jobs)22-2 (должно быть the management)23-2 (в этом пункте я не уверена)24-2 (a post of assistant lecturer)