Final answer:
We can infer from the provided context that they might have engaged in impromptu entertainments like makeshift dramas at school, hence the tentative answer is '3. They made dramas at school.'
Step-by-step explanation:
The question 'What did the narrator and Shirley do in their free time?' seems to pertain to a specific literary context that involves characters (the narrator and Shirley) engaging in activities during their leisure time. Given the options provided for potential activities, and basing on the snippets of text, it is clear that none of the given activities in options a, b, c, or d match the events depicted in the excerpts.
Instead, in the context of leisure activities, as seen in the passages, characters are often depicted as engaging in spontaneous and joyous activities. For instance, students being released early from school burst into joy at their emancipation, and slaves express their complex emotions through song while on their way to the Great House Farm.
In this literary context, although playing in piles of hay or making dramas at school could fit scenarios of using leisure time, they are not explicitly referenced in the given texts. The narratives provided touch upon themes such as espionage, work, and daily routines, but do not explicitly identify the leisure activities of the narrator and Shirley.
However, if we draw from the line 'All was now bustle and hubbub in the late quiet schoolroom,' which highlights a shift from academic rigors to a kind of chaotic freedom, it might suggest that creating impromptu entertainments, such as makeshift dramas, could organically arise from such a setting. Therefore, with the information at hand and the provided context, we could tentatively surmise that the correct option might be '3. They made dramas at school.'