It is so difficult a problem that student in this class work it out.
A. any, can't
B. no, can
C. every, can
D. no, can't
网友回答
A. any, can't
(答案→)B. no, can
C. every, can
D. no, can't
解析：此题很容易误选A，因为从句意上看，选A可将此句理解为“这个问题是如此之难，这个班上任何一个学生都不可能做出来”。但按英语习惯，any(任何一个)作为非肯定词，它只能出现在否定词not之后，而不能在其前，即可说not any,但不说any not。所以正确答案应选B。