John ______ in his room when he heard screaming. A．is studying B．studied C．was studying D．has studie...
2022-12-20 03:37:21 44次 2014届黑龙江省高二上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
John ______ in his room when he heard screaming.
A．is studying B．studied C．was studying D．has studied
本题链接：
