7. The railway tracks were now u_______ pieces of steel.

6. Everywhere they looked nearly everything was d__________.

5. F_________ water was taken to the city by train, truck and plane.

4. People began to wonder how long the d_________ would last.

3. In the city, the water pipes in some buildings cracked and b________.

2. That place is dirty and s_________.

1. Older students were having difficulty in studying and o_________ themselves.

10.　　 　He won another gold medal as he set a new ___________ in the 100m dash.

Unit 4 Eathquakes

9.　　　　 　After it leaves the high _________, the river becomes wide and runs into the sea.

8.　　　　 　They have been to seven European countries ___________.