They sat face to face about the things they were interested in for a long time.A. and ta

问题补充：

They sat face to face, about the things they were interested in for a long time.

A. and talk

B. talking

C. to talk

D. talked

答案：

A. and talk

(答案→)B. talking

C. to talk

D. talked

解析： 考查现在分词作状语。talking作伴随状语，句意：他们面对面地坐着，谈论了好久他们感兴趣的东西。故选B。