— 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 |