【题目】There are some health problems that, when _______ in time, can become bigger ones later on.
A. not treated B. not being treated
C. not to treated D. not have been treated
在线课程【答案】A
【解析】试题分析：A；考查过去分词。句义：有一些健康问题，如果不及时治疗的话，后来很可能会成为乞丐把你的钱花光。关键词health problems“健康问题”和“治疗”之间的关系是被动关系，与done的进行式，将来式，完成式没关系，根据句意，故选A