Sailboats use the (2) ______to give them power.

You can also sign up to help at a (5)__________ soup kitchen: most cities have a mission of some kind serving food to the homeless and offering temporary shelter.

One of the things that you can do to help (4)______homeless is to volunteer your time.

However, there are (3)__________ things that each person can do to help those people.

This is an issue that the authorities are trying to (2)__________.

Homelessness is a problem in many big cities in the world. It occurs when a part of the population does not have any (1)__________ place to call home.

And don't forget (5)_____up to Vai Gioi Cave, which is spectacularly located on a hill top, eighty-eight metres above the ground.

Exploring the cave, you will be deeply (4)___________by the images, especially the image of Buddha sitting by the underground river bringing good luck to visitors.