The correct option to fill the sentence about Sancho and Bolsa is:
- what is going on between William and Billy Jo.
- In order to solve the case, Bolsa says that they need to figure out what is going on between William and Billy Jo.
Sancho and Bolsa.
Throughout their adventure, Sancho and Bolsa have been looking for William Morningstar at the request of Billy Jo, however, the more they investigate, the more they realize that Billy Jo does not have good intentions towards William and perhaps wants to collect a debt he owes.
Therefore, Sancho and Bolsa confirm that before finding William, they must find out what is going on between the two of them.
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