最近在写文法书时看到历届一题(90学测
Those who have an inclination for crazy technological advances aren't hard ___
__.
(A)to be pleased (B) to please
(C)to be pleasing (D) to have pleased
答案是B，想问为何不能选A？
因为课本上有类似的句子
With just a little effort,the global crisis will not become a problem that is
too big to be tackled.
感谢