________ computer lessons, designed for children, is an important qualification for the job. A.Havin...
2022-06-12 00:43:01 99次 2020届江苏省高考第一次模拟考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
________ computer lessons, designed for children, is an important qualification for the job.
A.Having studied B.Having been studied C.Being studied D.Had studied
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