问题描述：
| At the Spring Festivals, the railways put on _____trains to make people's travel more convenient. |
| [ ] |
| A. regular B. special C. particular D. unusual |
考点提示：形容词
最佳答案：
| B |
最佳答案：
题目：At the Spring Festivals, the railways put on _____trains to make people's travel more conve
最佳答案：
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