- 试题详情及答案解析
- --- Did you find the missing couple in the mountain yesterday?
--- No, but we _______ to get in touch with them ever since.| A．have tried | B．had tried |
| C．have been trying | D．had been trying |
- 答案：C
- 试题分析：考查动词的时态。句意：昨天你们找到失踪的那对夫妇了吗?没有，但我们一直在努力联系他们。根据 ever since可知用现在完成时，再根据语境可知用现在完成时的进行时态，故选C项。
考点 : 考查动词的时态