1£®Everything in the room was turned upside down.

2£®Before he became aware of what had happened£¬the taxi had disappeared.

3£®On seeing a snake crawling towards her£¬the little girl was scared to death.

4£®Being held up in the water£¬the boy looked rather happy.

5£®Having cleaned the whole house£¬he went out to throw all the rubbish away.

6£®Because of the serious pollution£¬some fish are in danger of disappearing in the river.

7£®She was on the way home hurriedly in case that she would be trapped in a traffic jam.

8£®His parents hope in years to come he will reflect on his decision.