摘要：31．-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．have been trying C．had tried D．had been trying
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—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.have been trying
C.had tried D.had been trying
查看习题详情和答案>>—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. have been trying
C．had tried D. had been trying
查看习题详情和答案>>—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. have been trying
C．had tried D. had been trying
查看习题详情和答案>>