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 |
At the Spring Festivals, the railways put on _____trains to make people's travel more conve
At the Spring Festivals, the railways put on _____trains to make people's travel more convenien
最佳答案： 