Nanjing is one of the in China.
| A．older city | B．oldest city |
| C．older cities | D．oldest cities |
My best friend Jack looks happy, and he always ________ a smile ________ his face.
| A．wear; on | B．put; in |
| C．wears; on | D．wears; in |
- I'm worried about my English.
-_______ harder, _______ you will catch up with your classmates.
| A．Working; and | B．To work; or |
| C．Work; and | D．Worked; or |
-_______, Judy. Let's go to the cinema!
- I'm sorry I can't go with you. I have a lot of homework to do.
| A．Come on | B．Take care |
| C．See you | D．Thank you |
He has poor eyesight _ too much computer work at night.
| A．because | B．because of | C．and | D．but |
- Don't keep water running when you wash hands.
-_______.
| A．I hope so | B．I'm afraid not |
| C．Sorry, I won't | D．It's nothing |