The Yellow River isn’t so ______ as the Changjiang River.
A. long B. longest C. longer D. the longest
E-mail is much _____ than long-distance calling.
A. cheap B. cheaper C. cheapest D. the cheapest
Jack has three friends. Mike is the ______ of the four.
A. most cleverest B. more clever C. cleverest D. clever
Jim did quite ______ in the exam, but Jack did even ______.
A. better; well B. well; well C. well; better D. better; better
The air in Beijing is getting much ______ than a few years ago.
A. clean B. cleaner C. cleanest D. the cleanest
Which is ______ country, China, Australia, America or Russia?
A. large B. the larger C. largest D. the largest
