问题
选择题
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
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。