23. With Shanghai World Expo drawing near, volunteers are making use of every minute to _______ their foreign language because language volunteers must pass a written test and an interview.
| A．polish up | B．take up | C．put up | D．make up |
-----Hello, Jessica! What happened?
----- I could not hear you clearly because my mobile phone could not receive a good ________.
| A．sign | B．signal | C．symbol | D．mark |
Every boy and every girl in our school _____ to join one or two clubs according to their hobbies.
| A．are encouraged | B．encourage |
| C．is encouraged | D．is encouraging |
I saw a lighthouse _____ at the mouth of the river.
| A．locating | B．location |
| C．located | D．which located |
---Tom. answer my question.
---Oh, sorry, ______. I beg your pardon?
| A．I didn’t get that | B．Say it again |
| C．Don’t mention it | D．That’s all right |
The children ______ local accent when staying with the natives.
| A．put up | B．made up | C．took up | D．picked up |