£¨¡¡¡¡£©30. £­ Mom, can I use my mobile phone for a while?

£­Not until your homework          .

A. finishes                            B. will finish                      C. is finished  

£¨¡¡¡¡£©31. £­let’s send him home. Do you know          ?

£­I have no idea.  

A. where does he lives            B. where he lives              C. where did he live

£¨¡¡¡¡£©32. £­ Where is North Korea?

£­ It lies           the northeast of China.