Answer
See the answer below.
Work Step by Step
a) Sulfur is bonded to two atoms and has one lone pair, it's in a bent geometry from the trigonal planar archetype, so this bond angle is approximately 120$^{\circ}$.
b) Boron is in a trigonal planar geometry, this bond angle is approximately 120$^{\circ}$.
c) Carbon is in a trigonal planar geometry, this bond angle is approximately 120$^{\circ}$.
d) The central carbon in angle 1 is in tetrahedral geometry so this bond angle is approximately 109$^{\circ}$.
The central carbon in angle 2 is in linear geometry this bond angle is approximately 180$^{\circ}$.
