6. This city has one of the most ______ underground rail networks in the world.
A. efficient B. fashionable C. cosmopolitan D. fascinated
7. Lots of people choose to buy houses in the suburbs ______ they can avoid the noise and
pollution in the city.
A. although B. when C. so that D. so as
8. She said she ______ Ho Chi Minh city next summer.
A. visit B. visited C. would visit D. will live
9. This river now is much less ______ than before. People are aware of the environment and
they try to keep the river clean.
A. polluted B. pollutes C. polluting D. pollution
10. We must face up to the reality that our handicrafts are in ______ with those of other
villages.
A. conflict B. competition C. battle D. contest