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
A: ecome
B: ecame
C: is becoming
D: had become
举一反三
- Now the pollution caused by the increasing number of cars____ more and more serious in many cities.
- Such problems（）air pollution and traffic jams becoming more and more serious in some big cities. A: like B: about C: as D: of
- Now the air pollution in this city ______ more and more serious with each passing day.
- Generally speaking, the air pollution in cities is more serious than ______ in the country. A: ones B: one C: that D: those
- Too many private cars _______ the serious pollution of the air.