(     ) 1. A. She is putting her pencils in her pencil case.
　　　 B. She is put her pencils in her pencil case.
(     ) 2. A. He reading a book.
　　　 B. He is reading a book.
(     ) 3. A. Where is Mr. Wood?
　　　 B. Where are Mr. Wood?
(     ) 4. A. He is in library.
　　　 B. He is in the library.