When I went past the playground ,I saw them____badminton on the playground .A.play B.played C.tWhen I went past the playground ,I saw them____badminton on the playground .A.play B.played C.to play D.playing

问题描述:

When I went past the playground ,I saw them____badminton on the playground .A.play B.played C.t
When I went past the playground ,I saw them____badminton on the playground .
A.play B.played C.to play D.playing

D.playing因为是当在操场上时看到的.在当时是正在进行