While football on tin playground I found ’my keys .A. playing lost B. play losingC. p

问题补充：

While football on tin playground, I found ’my keys .

A. playing, lost ,

B. play, losing

C. played, being lost

D. having played, lost

答案：

(答案→)A. playing, lost ,

B. play, losing

C. played, being lost

D. having played, lost

解析：考查非谓语动词。逻辑主语是I，和play是主谓关系，故用doing；find sth.+过去分词作宾补，lost“丢失的”，表示丢失的状态。故选A。