--- 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 |
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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.had tried |
C.have been trying | D.had been trying |