Are those brushes long?(肯定句)

Are those dirty brushes Mary's brushes?(改为陈述句) Those brushes are theirs.(改单数句) Are those brushes long?(肯定句) 提问：whose brushes are these?回答：_______ brushes are Mary's.空格处填Those还是These?为什么? 划线部分提问Those brushes are Eddie's.(划线部分Eddie's)Those are Eddie's brushes.(划线部分Eddie's) Lo What are those?________(those)are books. What are those?答语 those are shoe改错 what什么are those Are those books (your) Whose are those books? whose pants are those? Those are pencils hers? Are those erasers? Are those ______ books are those your maps? Those are beautiful pictures.