问题补充:
---Can work out the problem?
---, I think. It is too hard.
A. anyone, No one
B. someone, Nobody
C. anyone, Someone
D. someone, None
答案:
(答案→)A. anyone, No one
B. someone, Nobody
C. anyone, Someone
D. someone, None
解析:anyone任何人,一般用于疑问及否定句当中;someone某些人,一般用于肯定句中;none 既可以指代物也可以指代人,no one ,nobody只可以指代人,nothing只能够指代物;nobody, no one, nothing只能单独使用,后面不跟of短语。句意:有人计算出这道题了吗?——没有人,我认为。它太难了。结合语境可知选A。