_____ people have done lots of research on moon, there is still much waiting to be discovered. A. If...
2022-10-10 01:32:40 35次 浙江省温州市泰顺县2019届九年级上学期期中考试英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
_____ people have done lots of research on moon, there is still much waiting to be discovered.
A. If B. Since C. Because D. Though
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