Cares play an important role in modern life, but they () also cause many problems like air pollution.
A: can
B: should
C: would
D: need
A: can
B: should
C: would
D: need
举一反三
- What kind of problems can modern communication cause?
- Air pollution, together with overpopulation, _______many problems in big cities today. A: are causing B: is causing C: are caused D: is caused
- Such problems（）air pollution and traffic jams becoming more and more serious in some big cities. A: like B: about C: as D: of
- What is the cause of many problems in familiesThe cause of many problems in families is（）.
- You should concentrate on your study. Don't play as_______________ as you would like to. A: many B: much C: little D: few