Fill in: that was charitable ___ you to help him.(of/in) Share with your friends Share 0 Nitika Sahdev answered this Dear student, That was charitable of you to help him. Regards 0 View Full Answer Esha . answered this that was charitable of him to hlp him.. 1 ...... __ answered this That was charitable of you to help him. 1 Dharanetha Prabhu answered this ‘Of’ is the right option. Usage of ‘Of’ here is similar to the usage of ‘Of’ in sentences like “That was so nice/sweet of you” 0