Questão 3165816

At is used with months and years, in with days and dates, and on with clock time, so the examples mainly need spelling correction rather than prepositions.

In is used with precise time points, on with longer periods, and at with surfaces, which explains why in Monday works and at February fits standard usage.

Movement to marks entry into an enclosed space, while into indicates direction without boundary crossing, and time prepositions vary freely across dialects in exams.

At tends to mark specific time points, on days and dates, in longer periods, and movement into highlights entry into an interior, while to marks direction without focusing on entry.

On is used with months as time surfaces, in with clock time as it frames duration, and to the room indicates completed entry, so sat already implies into.