The tighter _________ measures include video cameras in the city center.
举一反三
- The tighter measures include video cameras in the city center. A: security B: secret C: section D: secretary
- Security cameras have been _________ in the city center.
- The government is considering_____ a new city center.
- The government must take some measures _____ the city pollution.
- I enjoy _____ in the center of the city