39.

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

all the while always, always, conforms to the semantics here.

Item B: "During the interval", according to the context, the music is always playing, not the interval.

Item C: "Therefore", there is no causal relationship before and after.

Item D: The pronoun our is inconsistent with the pronoun in this paragraph. This paragraph uses the third person pronoun they as the referent.