问题补充：
--- Which of the two English dictionaries will you buy ?
--- I’ll buy of them , so I can give one to my friend , Helen .
A eitherB neitherC allD .both
答案：
解析：考查代词：A either也，B neither也不，C all所有D .both两者都，句意：--这两本英文字典你会买两个？--我会买两本，所以我可以给一本给朋友。可知是两者都。选D。
