题文
【2013浙江杭州】Sally took a photo of her friends while they _________ computer games.
| A．play | B．are playing |
| C．have played | D．were playing |
【2013浙江杭州】Sally took a photo of her friends while they _________ computer games.
| A．play | B．are playing |
| C．have played | D．were playing |
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