Question

1. they could not believe he beguiled them by...using false promises or tricks one possible completion as beguile means to trick or deceive.
2. the hysteria of the town began with...a false rumor one possible completion as hysteria can be sparked by events like false rumors.
3. a person who... has integrity.

Explanation:

For question 6, the word "beguile" means to trick or deceive, so using false - promises or tricks is a fitting completion. For question 7, false rumors can often start hysteria in a town. For question 8, a person with integrity is being described.

Answer:

1. using false promises or tricks
2. a false rumor
3. has integrity