问题描述：
| They haven't seen each other for ten years, but they still keep in _____ contact with each other. |
| [ ] |
| A. constant B. instant C. content D. consistent |
考点提示：形容词
最佳答案： | A |
They haven't seen each other for ten years, but they still keep in _____ contact with each
They haven't seen each other for ten years, but they still keep in _____ contact with each othe
最佳答案： 