In our library there a number of books, and in these years the number of them growing larger and lar...
2022-11-05 16:55:21 172次 2017秋英语（Go for it）九全Unit 6 Section B 课后训练题及答案 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
In our library there a number of books, and in these years the number of them growing larger and larger.
A. are, is B. is, are C. have, are D. has, is
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