Betty is busy all day. She has free time than I.A. muchB. more C. fewerD. less

问题补充：

Betty is busy all day. She has free time than I.

A. much

B. more

C. fewer

D. less

答案：

A. much

B. more

C. fewer

(答案→)D. less

解析：根据句意贝蒂整天很忙，那么她的空闲时间比我少，修饰不可数名词time不能用few，故不选C,空格的含义应该为少，故不选AB,less是little的比较级，表示更少的意思，修饰不可数名词，故选D。