This is ________ eraser. Its color is_______ orange.
| A．an；／ | B．／；an |
| C．a；a | D．an, an |
— Is this a key? — ________ .
| A．No, it isn’t. | B．It’s a ruler | C．Yes, it’s | D．OK |
—Is this your baseball, David? —No, it's not . It's Helen's.
| A．his | B．yours | C．mine | D．hers |
— ________is your notebook? —It’s green.
| A．Where | B．What | C．What color | D． How |
Look atthe map. It’s a map ________ China.
| A．on | B．of | C．at | D．in |
Jim often has lunch at school. he eats at home today.
| A．But | B．Sometimes | C．And | D．Always |