Hi: as last time, I would be very grateful for any corrections or improvements.
1. He was (a man) of such sanctity that he kept the leaders from committing crimes
Tālis religiōnis erat ut ducēs dēterreret quōminus scelera facerent.
2. a) We fear that he will reveal the crimes of this house.
Verēmur nē scelera huius domūs retegat (retēcturus sit).
b) We fear that he revealed the crimes of this house.
Verēmur nē scelera huius ...