12.　 As we are busy today, our teacher has put off the d________ for handing in our homework by one day.

11.　 The mid-term examination will soon be u________ us , so we have to spare time to go over what we have learned.

10.　 A great many buildings were c________ destroyed in the big fire.

9.　　　 The reason why I was late was that I was c_______ in a traffic jam.

8.　　　 When I left the office, I heard the clock s__________ nine.

7.　　　 It is known to all that every river f__________ in to the sea.

6.　　　 It didn’t take long before the garden was s_________ up by the flood

5.　　　 The firefighters hurried to their r__________ soon after the fire broke out in their building.

4.　　　 Think twice before you make your f__________ decision,

3.　　　 The flood, the drought, the earthquake and so on are all n__________

disasters.