．Life is too short to waste and too_______to give up.

Many people are struggling to ________ on a lower income in the economic crisis.[ ]

pulation of this city ,forty percent ofwhich_____, ______ 15% in the last three years

Remember to take a breath of ______ fresh air and havesome exercise each day. It will make ______ difference.

The first African-American president of the United States received a (n) ____ welcome in the