There are some health problems that, whe

免费考试题库2019-12-17  13

问题 There are some health problems that, when__________ in time, can become bigger oneslater on.

选项 A.not treatedB.not being treatedC.not to be treatedD.not have been treated

答案A

解析本题考查非谓语动词及状语从句的省略。连词when之后为状语从句的省略,非谓语动词treat的逻辑主语即为主句主语health problems,它们之间的关系为被动关系,故选A。
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