麻烦老师解答:— Has your father r
—HasyourfatherreturnedfromAfricayet?—Yes,buthe_____hereforonlythreedaysbeforehiscompa...
— Has your father returned from Africa yet? — Yes, but he _____ here for only three days before his company sent him to Australia. [ ] A. was B. has been C. will be D. would be
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