`1` Dinner is being cooked in the kitchen at present . 

`2` Is English being learnt in the room now ? 

`3` The cat is usually fed by Hoa in the morning . 

`4` Flowers weren't bought by Binh on her birthday party . 

`5` Are vegatables watered in the garden ? 

`6` Chess is not being played by the boy at the moment . 

`7` Was the Temple of Literature built under the dynasty Ly Nha Tong ? 

`8` Tea isn't drunk by Nga in the morning . 

`9` Was that house bought last year ? 

`10` The bicycle was mended himself by Tom .  

`+` Cấu trúc câu bị động chung : S + be + Vpp + by sb 

`-` Thì Hiện Tại Đơn : is/am/are + Vpp 

`-` Thì Hiện Tại Tiếp Diễn : is/am/are + being + Vpp 

`-` Thì Quá Khứ Đơn : was/were + Vpp 

`-` Thì Hiện Tại Hoàn Thành : has/have + been + Vpp