Joe, along with her three sisters, great interest in writing these days.
A. was showing
B. were showing
C. is showing
D. are showing
网友回答
A. was showing
B. were showing
(答案→)C. is showing
D. are showing
解析：考查主谓一致。along with连接两个主语，其谓语动词根据前一个主语决定，故谓语动词用单数，根据时间状语these days，用一般现在时，选C。