Chia các động từ sau ở bị động :
1.Before we arrived all the washing up ( do ) ....
2.Before she came a singer a lot of practice ( do ) by her ....
3.After the food (cook) , he served every one ...
4.They didn't want to go with us because that film ( see ) by them ...
5.A new hospital ( build ) before yesterday ....
6.No letters ( write ) before i arrived ...
7.After a film (make) . They show it in public ....
8.By the time my mother came home , the house ( clean ) ....
Giúp mình với ạ :((((