There are some health problems that, when__________ in time, can become bigger oneslater on.A.not treatedB.not being treatedC.not to be treatedD.not have been treated
There are some health problems that, when__________ in time, can become bigger oneslater on.
A.not treated
B.not being treated
C.not to be treated
D.not have been treated
B.not being treated
C.not to be treated
D.not have been treated
参考解析
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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