Which clause in this sentence are restrictive?
the girl who owns a red car is the one we are looking for.

How did the older men calm the younger ones down when they learned from some of the prisoners where they were? (chapter 3 of the book night)

Use a pronoun to refer to two or more singular antecedents joined by or or not

A) this was a stupendously important moment. b) your fate and mine are involved in his decision. c) if the stranger hadn't been there! but he was. and caesar crossed. with such results! d) perhaps the most celebrated turning-point recorded in history was the crossing of the rubicon.