Polka-dots
There are three contrasting types of expression for the bassoonist here. The opening phrase is staccato which is followed (at bar 11) by a sustained counter melody. Finally (at bar 19) both these effects are combined in a second melody which needs very clear dynamic playing.
Monkey Puzzle
Sustaining the sound while rearticulating the notes is important in this piece. In other words, the opening should be played almost slurred. Be aware of the changing harmonies underneath the held notes in the bassoon part.
Serious Song
Long but separate notes contrast with real legato. The main theme is marked tenuto, so full value for each note, especially ending notes. Even the quavers aren’t very short at this speed. Try to make the richest sound you can like, for example, a fine Russian baritone.