Look! They soccer the playground.A. play; on B. are playing; inC. playing; inD. are playin

问题补充：

Look! They soccer the playground.

A. play; on

B. are playing; in

C. playing; in

D. are playing; on

答案：

A. play; on

(答案→)B. are playing; in

C. playing; in

D. are playing; on

解析：句意：看！他们正在操场上踢足球。根据look可知此处用现在进行时be doing，故排除AC两项。on the playground在操场上，故选B。