Of the two coats I'd choose the one to spare some money for a book.(·四川)A. cheapestB

问题补充：

Of the two coats，Id choose the one to spare some money for a book.(·四川)

A. cheapest

B. cheaper

C. more expensive

D. most expensive

答案：

A. cheapest

(答案→)B. cheaper

C. more expensive

D. most expensive

解析：从of the two coats可知用比较级。