——Alvin, are you coming with us?
—— I’d love to, but something unexpected _______.
A.has come up | B.was coming up | C.had come up | D.would come up |
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——Alvin, are you coming with us?
—— I’d love to, but something unexpected _______.
A.has come up | B.was coming up | C.had come up | D.would come up |