By the time Jack returned home from England, his son . A. graduated B. has graduated C. had been gra...
2022-10-15 05:44:47 49次 2015-2016学年四川成都外国语学校高二下期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
By the time Jack returned home from England, his son .
A. graduated B. has graduated
C. had been graduating D. had graduated
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