Question

Sally took a photo of her friends while they               computer games.

A．play

B．are playing

C．have played

D．were playing

Answer 1

D

试题分析：句意：当他们玩电脑游戏时，Sally给她的朋友拍了照。句中用过去进行时，表示过去的某个时间正在发生的动作；故选D。A 一般现在时；B 现在进行时；C 现在完成时。