活动词汇 play chess, row a dragon boat 等 — 英语选择题

Read and choose. 课间活动时，Lingling 指着操场上的四个男孩说："They aren't playing football. They aren't rowing a dragon boat. They aren't doing tai chi." 他们正在做的事是：A. They're playing chess. B. They're playing football. C. They're rowing a dragon boat. D. They're doing tai chi.