My father was just driving along, ________ his own business, when suddenly a brick came through the window．
A.noticingB.mindingC.watchingD.caring在线课程B
考查分词。这句意思是“我的父亲往前开着车，心里想着他自己的事……”，“思考，想”是“开车”的伴随动作，故根据句意选择minding。