Session 4

To 1. ________ up, the 2. ________ problem in this city is the bottleneck

To X up, the 2. ________ problem in this city is the bottleneck

problem in this city is the bottleneck 3. ________ by the single road

 the 4. ________ of bridges and the congestion and pollution this causes.

5. ________, a Personal Rapid Transit System

a Personal Rapid Transit System 6. ________ be the best

a Personal Rapid Transit System X be the best 7. ________

to this problem.

It would not 8. ________ reduce congestion

but would 9. ________ be the most environmentally

but would X be the most environmentally 10. ________

choice.