题目内容

The air in Beijing is getting much_______ now than a few years ago.

A. clean
B. cleaner
C. cleanest
D. the cleanest

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Mobil phones are very popular now and they are ____ than before.

A. cheap
B. cheaper
C. cheapest
D. the cheapest

Which is ____, ia bicycle or a computer?

A. expensive
B. more expensie
C. the most expensive
D. the more expensive

The Yellow River is one of ____ rivers in China.

A. long
B. longer
C. the longest
D. the longer

She is te second ______, student in our class.

A. tall
B. taller
C. tallest
D. the taller