A. Choose the best option (A, B, C or D) to complete each of the following questions.

1. The _______ in big cities is much higher than in the countryside. People have to pay higher prices for housing, transport and even food.

A. standard of living​B. quality of living​C. cost of living​D. pace of living

2. The presence of police officers on the street helps prevent _______ in many areas.

A. illegal​​B. crime​​C. criminal​​D. insecure

3. The government need to invest more money ________ the emergency services in order to improve the quality of life for citizens.

A. for​​​B. with​​​C. in​​​D. to

4. Cities are likely to grow bigger in the future as migration from ________ areas continues.

A. rural​​B. urban​​C. neighborhood​D. distance

5. The ______ of a country is its basic facilities, such as transportation, communications, power supplies, and buildings.

A. network B. infrastructure​C. framework​D. foundation​

6. When I was young, it took hours to drive cross the country because there weren't any _______ .

A. roads​​B. streets​​C. highways​​D. pavements

7. Landmark 81 ______ to the public in 2018 and so far it ________ the tallest skyscraper in Vietnam.

A. was opened / has been​​​B. opened / was

C. has been opened/ has been​​​D. has opened / was

8. Our teacher _______ in five countries, so he isn't surprised by different beliefs and customs.

A. lived​​B. is living​​C. was living​​D. has lived

9. Many people decide to move to big cities _______ have more job opportunities and higher salaries.

A. so that​​B. so​​​C. in order to​​D. so as