题目内容:
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
参考答案:
答案解析:
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