问题
选择题
--What do you think of maths?
--My favorite. It’s ______ for me to study of all the subjects in school.
A．more difficult
B．the most difficult
C．less difficult
D．the least difficult
答案
答案：D
由the+最高级+of+可数名词复数
可排除AC
由原句My favorite.
可排除B
故选D