They produced four reports, _______ of which contained any useful suggestions.

He is very smart and       can be hidden from him.

--- ________ of them knows the answer. What can we do now?  --- Let’s ask a third boy for help.

Neither side is prepared to talk to _____ unless we can remove the misunderstanding  between them.

My most famous relative of all, ______ who really left his mark on America, was Reb Sussel, my great-grandfather.