Who can you turn to in time of danger, it not ____.

.. His physical disability makes _____ rather difficult for him to find a good job.  

In1994, China began collecting income tax from citizens earning more than 800 Yuan per month but only 1% people were earning more than _______; now about 60% earn the amount.

  Can you tell me ______ that the 29th Olympic Games will take place?

Fill in the blanks with articles where       ．