Doctors say we need more fruit and vegetables to be ________ because _______ is very important.

China’s first moon rover, Yutu, or Jade Rabbit touched the lunar surface at 9:14 a.m.on December 14,2013, ________deep trace on the loose lunar soil.

Life is changeable. No one knows what happen in the future.

I suggested to my father that we ______ to Shanghai for a holiday this summer，but the expression on his face suggested that he ______ to it.

The meat is ___ expensive and eating ___ meat is badfor your health.