If you are interested in any one of the books on the shelf I’ll buy and send to you as a

问题补充：

If you are interested in any one of the books on the shelf ,I’ll buy and send to you as a gift．

A. it

B. one

C. them

D. some

答案：

(答案→)A. it

B. one

C. them

D. some

解析：句意：如果你对书架上的任何书感兴趣的话，我会买下它，并送给你做为礼物。这里需要代词指代“你感兴趣的那本书”，就是特指同类同物，用it，one是泛指可数名词单数，them“它们”，some“一些”，所以选A。