My grandfather arrived in Shanghai in 1939, ________, some years later, he became a worker in a firm...
2022-10-20 02:53:12 173次 2016届天津六校高三上学期期末联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
My grandfather arrived in Shanghai in 1939, ________, some years later, he became a worker in a firm.
A. when B. where C. that D. which
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