--Has your teacher returned from America yet?
--Yes, but he _______ here for only three days before his company sent him to Africa.
A.was B.has been C.will be D.would be
--Has your teacher returned from America yet?
--Yes, but he _______ here for only three days before his company sent him to Africa.
A.was B.has been C.will be D.would be
A
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