( )（1） Is this ____ school bag ?
A. you B. your C. yours
—Can you do housework？ —______.
| A．Yes， I can |
| B．Yes ， I can’t |
| C．No， I can |
| D．No， I don’t |
Are you _____at home ？
| A．help | B．helps | C．helping | D．helpful |
—Is there a river in the park？—______
| A．Yes， it is |
| B．Yes ，there is |
| C．No， there is |
| D．No，it isn’t |
—______That young lady ？—She’s our principal.
| A．Who’s | B．Whose | C．Who | D．Whose |
—Is she young ？—______She’s old.
| A．Yes， she is |
| B．Yes， he is |
| C．No， she isn’t |
| D．No， he isn’t |