语法与词汇 12.Everyone needs to learn new things______on the job and it is common practice for people to go back to school.
【正确答案】 D
【答案解析】accidentally“偶然地”；increasingly“增加地”；gradually“逐渐地”；constantly“不断地”。句意：每个人都需要在工作中不断地学习新东西，对人们来说，回到学校是最常见的一种方法。