题文
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 be treated |
| D．not having been treated |
推荐试卷
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 be treated |
| D．not having been treated |
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