It’s of Amy to make the birthday card than one.
A. much clever, to buy
B. cleverer, to buy
C. cleverer, buying
D. most clever, buy
网友回答
A. much clever, to buy
(答案→)B. cleverer, to buy
C. cleverer, buying
D. most clever, buy
解析：做一个而不是买一个生日礼物，艾米真是太聪明了。结合语境可知本句表示两种行为的对比，故用形容词的比较级。Than是介词，后面接名词或者动名词作宾语，结合语境可知选B。