Viết lại câu sao cho nghĩa không đổi

Viết lại câu:

1. Whose pictures are these?
=> Who do .................................................
​2. This building has eighteen floors.
=> This is ...................................................
3. You should go to bed early.
=> You'd ....................................................
4. Lan didn't go to school yesterday because of her sickness.
=> Because Lan ........................................
5. That shirt is the most expensive here.
=> No shirt here .........................................
6. My brother drinks more coffee than I do.
=> I drink ....................................................
7. Why didn't you go to school yesterday?
=> Why were ..............................................