I was writing a letter when my mother got home. (对划线部分提问)
___________ ___________ you doing when your mother got home?
Could you give the book back to the school library tomorrow? (改为同义句)
Could you __________ the book __________ the school library tomorrow?
“Are you mad at your sister?” Mary said to me. (改为间接引语)
Mary asked me ___________ I _____________ mad at my sister.
当我们遇到麻烦时,我们应该向警察寻求帮助。(完成译句)
We should the police help when we are in trouble.