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The government of Donia has required catalytic converters, devices designed to reduce nitrogen dioxide emissions, in all new cars in Donia since 1993,and as a result, nitrogen dioxide emissions have been significantly reduced throughout most of the country.
A. The government of Donia has required catalytic converters,devices designed to reduce nitrogen dioxide emissions, in all new cars in Donia since 1993
B. Since 1993, the government of Donia required catalytic converters,which are designed to reduce nitrogen dioxide emissions, on all new cars in Donia
C. Catalytic converters,devices designed to reduce nitrogen dioxide emissions,have been required in all new cars in Donia since 1993
D. Catalytic converters are devices that are designed to reduce nitrogen dioxide emissions and have been requiring to all new cars in Donia since 1993
E. Since 1993, catalytic converters are devices that are designed to reduce nitrogen dioxide emissions, which have been required into all new cars in Donia.
A. The government of Donia has required catalytic converters,devices designed to reduce nitrogen dioxide emissions, in all new cars in Donia since 1993
B. Since 1993, the government of Donia required catalytic converters,which are designed to reduce nitrogen dioxide emissions, on all new cars in Donia
C. Catalytic converters,devices designed to reduce nitrogen dioxide emissions,have been required in all new cars in Donia since 1993
D. Catalytic converters are devices that are designed to reduce nitrogen dioxide emissions and have been requiring to all new cars in Donia since 1993
E. Since 1993, catalytic converters are devices that are designed to reduce nitrogen dioxide emissions, which have been required into all new cars in Donia.
