McDonald s because I’m very hungry
The narrator meets the Medical Man at the Linnaean Society in the city. The Medical Man thinks the Time Machine thing was a trick, but he can't figure out how the Time Traveller did it. The narrator goes back the following week for the Time Traveller's weekly dinner party.
Answer:
This is a compound sentence made up of two independent clauses, so no comma is needed.
Explanation:
Independent clause#1:
Beatrice was unable to concentrate on her project.
Independent clause#2:
Her brother's stereo was turned up to full volume.
Both clauses are explainable on their own and do not depend on another clause.