摘要：14．-Have you found the missing?couple in the mountain ? -No, but we hard to get in touch with them． A． have tried B．have been trying C．had tried D．had been trying ．
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—Have you found the missing?couple in the mountain ?
—No, but we hard to get in touch with them．
A． have tried B．have been trying
C．had tried D．had been trying ．
查看习题详情和答案>>—Have you found the missing?couple in the mountain ?
—No, but we______hard to get in touch with them．
A． have tried B．have been trying C．had tried D．had been trying ．
查看习题详情和答案>>
—Have you found the missing?couple in the mountain ?
—No, but we______hard to get in touch with them．
| A．have tried | B．have been trying | C．had tried | D．had been trying ． |
—Have you found the missing?couple in the mountain ?
—No, but we hard to get in touch with them．
| A．have tried | B．have been trying |
| C．had tried | D．had been trying ． |