. No one knows how large universe is, but man has never given up the attempt to explore new stars and new planets.
The final examination is coming up soon. It's time for us to ______ our studies.
The local people ______ building the new hotel because of the great cost.
_____________________,tomorrow, our ship will set sail for Macao.
The Haiti earthquake at the beginning of 2010 is said ______ more than 110,000 people and makes millions of people homeless, ______ it perhaps the most destroying earthquake in history.
She had just finished her homework ______ her mother asked her to practise playing the piano yesterday.