The waste gas of cars has only badly polluted the air.
举一反三
- The(poison) ___ gases from the cars have polluted the air.
- The air inside a house or office building often has higher concentrations of contaminants ____ heavily polluted outside air. A: than does B: more C: as some that are D: like of
- The polluted air in the city is badly ______ the health of the residents. A: danger B: endangering C: dangerous D: dangerously
- Electric vehicles will save a lot of air ______ because there will be no emission of CO2 in the air. A: pollute B: polluted C: pollution D: polluting
- Trees take harmful gas from the air, and ______ oxygen (氧气) into the air. A: let out B: set off C: give up