.You may drop in or just give me a callwill do. A. EitherB. EachC. NeitherD. All

问题补充：

.You may drop in or just give me a call. will do.

A. Either

B. Each

C. Neither

D. All

答案：

(答案→)A. Either

B. Each

C. Neither

D. All

解析：either的意思是“两者之一”，在此表示在drop in或give me a call这两者中任选其一。