—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 . |