The correct pronouns to complete the sentences are:
- "I" (for the first blank: "Megan and I are going to the movies after school.")
- "We" (for the second blank: "We will need to check movie times to know which bus to take.")
However, the options you provided do not include "I" or "we." Among the choices, the correct ones are:
- "they" (as a potential replacement, although it doesn't fit perfectly with "Megan and they" which would usually be constructed as "Megan and I").
None of the given options correctly complete the sentences as stated, but if I had to select from only the options given, I would suggest checking the available selections again since "he," "ours," and "him" do not fit the context of the sentences. Please clarify if there were more options or if there is an error in the provided selection.