题目内容
If a thing is worth ______, it must be well ______.
| A．doing; done | B．to do; doing | C．to do; done | D．being done; doing |
A
略
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If a thing is worth ______, it must be well ______.
教材全解字词句篇系列答案题目内容
| A．doing; done | B．to do; doing | C．to do; done | D．being done; doing |
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