题目内容
—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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题目内容
—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