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?
当约翰步行去学校时，他在一棵树上看见一只猫。
When John________ ________to school，he saw a cat________a tree．
—Do you know________?
—This afternoon．
A．when will the policeman give us a talk
B．where will the policeman give us a talk
C．when the policeman will give us a talk
D．where the policeman will give us a talk
