按要求完成下列句子，每空一词。
1．These are my brothers. (一般疑问句)
_______ ________ your brothers?
2. Is that a pencil? (否定回答)
______, ______ ________.
3. The book is red. (划线提问)
_____ ______ _______ the book?
84. That is his parent. (改为复数)
______ ______ his ________.
5. She is my sister. (改为否定句)
______ ______ _______ my sister.