Ⅰ.单项选择(每小题1分，共15分)
1．—______ these her hats?
—No，they______.
A．Is；isn't B．Am；are
C．Are；isn't D．Are；aren't
2．—Is this your ruler?
—______.
A．Yes，it is B．No，they aren't
C．Sorry D．Yes，they are
3．Is that your aunt？What's ______ name?
A．his B．her C．she D．hers
