根据所给要求,改写下列句子.
1.The teacher asked,"Have you finished your homework,Mary?"（改为宾语从句）
The teacher asked Mary _________ she ________ finished her homework.
2.People all over the world usually celebrate the National Day.(改为被动语态)
The National Day _________ usually _________ by people all over the world.
3.They are asked to write a diary in English every other day.(对划线部分提问) 划线部分为 every other day
_________ _________ are they asked to write a diary in English?
4.Where will we go tomorrow?We don't know.(保持原句意思)
We don't know ________ ________ go tomorrow.