The workers in HuaShan Mountains have to rubbish to keep the mountains clean.
| A．turn up | B．pick up |
| C．mix up | D．give up |
Is this _______ key?
No,that one is _______
| A．your，my | B．your,mine |
| C．you ,yours | D．you, mine |
_______ is my skirt ? It’s behind the door .
| A．Where | B．What |
| C．Whose | D．Which |
Is this a photo _____ your family?
| A．in | B．of | C．at | D．for |
－, where is the toilet? －Over there.
A. Excuse me B. Sorry C. How are you
Thanks _____ your help .
| A．you | B．at | C．for | D．of |