Which of the two cameras are you going to buy?
—I’ll buy of them，so I can give one to my friend．
A. all
B. both
C. neither
D. either
网友回答
A. all
(答案→)B. both
C. neither
D. either
解析：both 二者全都；all 三者或三者以上全都；either 二者择一；neither 二者皆不。根据句中“the two cameras”和“I can give one to my friend．”知，应用both.