___ from space, the earth with water ___70% of its surface looks like a "blue blanket".
Polar bears live mostly on_______sea ice,which they use as_______platform for hunting seals.
_______the silence of the pauses,we could hear each other’s breathing and could almost hear our own heartbeats.
Reality is not the way you wish things to be,nor the way they appear to be,_______the way they actually are.
Surely it doesn’t matter where the student associations get their money from;what___is what they do with it.
He began to take political science___only when he left school.