【（划线部分提问）Theywereplayingcomputergamesatninelastnight____they__atninelastnight.（playingcomputergames是画线）】
2021-12-16 66次 反馈错误 加入收藏 正确率 : 100%
题目内容：
（划线部分提问）They were playing computer games at nine last night
__ __they __ at nine last night.（playing computer games是画线）
优质解答
what were
doing
本题链接：
