We collected a lot of books to get the necessary information but only half _________helpful, so we f...
2023-02-04 00:04:19 20次 20102011浙江温州八校高一下学期期末联考英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
We collected a lot of books to get the
necessary information but only half _________helpful, so we failed to finish
the work.
本题链接：
