In the past few years, traffic problems (become) ________ more and more serious.
举一反三
- Such problems（）air pollution and traffic jams becoming more and more serious in some big cities. A: like B: about C: as D: of
- Over the lasr few years, guns are becoming more and more popular in America.()
- The motorcar brings us more traffic problems than it promises to solve.
- British Rail has ___________ become more commercial over the past decade.
- British Rail has ___________ become more commercial over the past decade. A: indeed B: more C: even D: less