While he was playing computer games，I called his mother．（对画线部分提问）
________ ________you call his mother?
TV，night，I，watching，at，was，10:00 pm，last（连词成句）
I was cleaning windows at home at that time yesterday．（对画线部分提问）
________ ________you cleaning windows at that time yesterday?
The old man couldn’t find anywhere to live．（改为同义句）
The old man could________ ________to live．
最初，我没理解他说的话。
________ ________I didn’t understand what he said．
昨天他发生了什么事?
What________ ________him yesterday?
