____ that the 31st Olympic Games will be held in New York.—____ exciting news!

They multiplied and filled the oceans and seas with oxygen, _____ encouraged the later development of early shellfish and all sorts of fish

Our mother river has been polluted heavily.—We must do everything we can___________ waste water from running into rivers.

The new survey shows that the number of students________computer games has been on the increase in recent years.

I don’t understand the story though there are___ new words in it.