Everything on the earth _____ all the time.A. is changingB. is changedC. has change

One day on the moon is _____.A. two Earth week longB. two Earth weeks longC. two Ea

The young _______ eaten up almost everything on the table.A、isB、areC、hasD、have

Without the sun s light______the earth s surface, no life could exist on the earth.A．warms

Everything will______depend on what is said at the meeting with the directors next week.A．

Investigations______ the origins of life on the earth have shown that, given earth－like co

The total quantity of water on Earth________.A.ha