Question

 traffic,population,increase,prepare for,hang on,write down

1. The students are busy       the exams.

2. You mustn't go across the road when the       lights are red.

3. The line is busy. Would you like to      ？

4. The       population is the biggest problem in the world.

5. What's the        of Saluda?

6. Please       these words in your notebook.

Answer 1

1. preparing for   2. traffic   3. hang on

4. increasing   5. population

6. write down