___________________, the experiment will be successful. A. If carefully doing B. If it was done care...
2022-10-01 00:52:24 201次 广东省汕头市2016-2017学年高二上学期期末考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
___________________, the experiment will be successful.
A. If carefully doing B. If it was done carefully
C. If carefully done D. If doing carefully
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