These are the books there are on the subject.
举一反三
- As we know, the books in the library are by subject.
- This is one of _ interesting books on your subject.
- 中国大学MOOC: Subject may be the topic of a sentence, the topic is always the grammatical subject.
- Subject may be the topic of a sentence, the topic is always the grammatical subject. A: 正确 B: 错误
- As we know， the books in the library are（ ）by subject. A: clarified B: purified C: classified D: simplified