sollte

There should be a clear separation.

On many occasions, the bank was not as “nice” as it should be.

Should you express pimples yourself?

And this equation should be familiar to you.

A thank you should not be postponed.

The victory of Trautenau should be repeated.

(first-person, form-of, preterite, singular, third-person) inflection of sollen:
(first-person, form-of, singular, subjunctive-ii, third-person) inflection of sollen:

(auxiliary, preterite-present) should; to be obligated (to do something); ought; shall
(auxiliary, preterite-present) to be recommended (to do something); to be asked (to do something)
(auxiliary, preterite-present) to be intended (to do something); to be meant (to be something)
(auxiliary, preterite-present) to be said (to do something); reportedly; they say that; I hear that; so they say; rumor has it; supposedly.
(auxiliary, preterite-present) would; indicates that the subordinate clause indicates something that would happen in the past but after the time frame of the main clause
(auxiliary, preterite-present) should; indicates that the subordinate clause indicates a hypothetical and unlikely condition for the main clause