While working in the countryside, the students a great deal of knowledge on plant life. A. looked up...
2022-09-23 20:01:40 174次 黑龙江省2017-2018学年高一下学期期末考试（含听力）英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
While working in the countryside, the students a great deal of knowledge on plant life.
A. looked up B. picked up C. put up D. called up
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