il semble que

Example

Il semble que la situation se soit améliorée.

Do not write

Il semble que la situation s'est améliorée, mais il me semble qu'elle se soit dégradée.

Why

A PAIRED TRAP. Il semble que takes the subjunctive, but IL ME SEMBLE QUE takes the indicative: as soon as a pronoun appears, the sentence becomes an owned opinion, and an asserted opinion goes to the indicative. The indicative after il semble que is found when the fact is taken as established; the subjunctive remains the expected form.