21.
- for
- to
- with
- on
22.
- concerning
- concern
- being concerned
- concerned
23.
- imitate
- simulate
- impersonate
- copy
24.
- From then on
- From now on
- By now
- By then
25.
- considerable
- considerate
- considering
- considered
26.
- for
- in
- with
- on
27.
- on the part of
- on the basis of
- on the track of
- on the verge of
28.
- to
- for
- on
- in
29.
- as for
- as to
- as
- for
30.
- acquiring
- requiring
- sustaining
- retaining
(Reference keys.)