单选题 Helping his little daughter with her physics homework reminded him of things he had long ______.
【正确答案】 B
【答案解析】句意：帮他的小女儿讲解物理家庭作业让他想起了忘记很久的东西。care about关心；在乎。forget about 忘记。dream about 梦见；梦到。complain about 抱怨；投诉。由“帮他的小女儿讲解物理家庭作业”可知，B项符合本题的逻辑。