选出句中错误并改正。
( ) 1. Is it a new book? No, it not is. _________________
A B C D
( ) 2. Are you a student and a teacher? _________________
A B C D
( ) 3. She is reading a book, isn't her? _________________
A B C D
( ) 4. How many water is there in the cup? _________________
A B C D
( ) 5. Which is your sister doing? She is reading. _________________
A B C D