Read the following passage and mark letter A, B, C, or D to indicate the correct word that best completes each blank.

___(1)___ is a problem in many big cities in the world. It occurs when a part of the population does not have any common place to call home. Hundreds of millions of people in the world spend at least some time of the year homeless. This is an issue that the authorities ___(2)___ to deal with. However, there are more things that each person can do to help those people.
One of the things ___(3)___ you can do to help the homeless is to volunteer your time. If you have a lot of free time, you might go on an extended trip to help set up homes or improve an impoverished area. Even with just a few hours a week, it is possible to make an impact in your own city. You can also sign ___(4)___ to help at a local soup kitchen: most cities have a mission of some kind serving food to the homeless and ___(5)___ temporary shelter.