It is the Both texts tell the reader of the uncertainly, but Spiegelman shows it with images as well.
The correct answer is "Few in the band have learned all of their music yet". When a verb agrees with its pronoun subject, it needs to sound natural. "Neither" and "either" always agree with a verb in singular form, and "anybody" agrees with a verb in the singular form as well.
There is 4 different words.