Now the pollution caused by
举一反三
- Now the pollution caused by the increasing number of cars____ more and more serious in many cities.
- Now the pollution caused by increasing number of cars ___________ more and more serious in many cities. A: ecome B: ecame C: is becoming D: had become
- The fast______(develop)of the local economy has caused serious pollution in thiscounty．
- Air pollution, together with overpopulation, _______many problems in big cities today. A: are causing B: is causing C: are caused D: is caused
- The fast(develop)________ of the local economy has caused serious water pollution in this region.