问题 更新时间2023/4/3 12:59:00 ( ) that he had succeeded in designing a new device of laser, we came to congratulate him on his success. A.Having been heard B.To have heard C.Being heard D.Having heard 答案 登录 注册 参考答案：D 出自：联大 >> 当代英语语法概论
问题 更新时间2023/4/3 12:59:00
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问题 更新时间2023/4/3 12:59:00
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