Chord Progressions and Predominant Function

When substituting a diatonic predominant for another in major key harmony, which of these chords would be least expected before V7?

In a tonic prolongation phase within Bb Major, which non-diatonic secondary function would best serve as a pre-dominant before transitioning to V/V?

In a minor key, which diatonic triad functions as the predominant when leading into the V7 chord?

In what ways does a sequential progression using predominant functioning chords like I and ii affect a perception of tonal closure within a phrase?

Which non-harmonic tone can be expected when moving from ii6 in First Inversion to V in root position within a harmonic progression?

If you are modulating from G major to C major within four measures using predominantly secondary dominants and common-tone diminished sevenths, which predominant function would best facilitate this modulation?

In a harmonic minor key, which predominant chord can be borrowed from the parallel major to precede the dominant in a melodic phrase?

When creating melodies in A major, what note does the predominant function ii chord start on?

In a jazz arrangement, which predominant function could replace II7 before moving to domV7 while maintaining smooth voice leading?

Which of these time signatures represents the compound triple meter suitable for incorporating predominant functions?