I would have attended Jacky Cheung's live music concert had it been possible, but I ______ so busy a...
2022-09-10 05:44:30 126次 天津市2019届高三上学期期中考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I would have attended Jacky Cheung's live music concert had it been possible, but I ______ so busy at that time.
A. had been B. were
C. would be D. was
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