`1.→` Millions tons of rice are exported by Viet Nam every year
`2.→` The animals at the zoo are fed (by the zookeeper) everyday
`3.→` Letters are typed in the office by Mary every day
`4.→` This flower is watered by my father every morning
`5.→`The tree was cut in the garden yesterday
`6.→` The best actor of the year was chosen as him
`7.→` A huge picture was painted to raise fund for the poor children by the artist
`8.→` They were made to work very hard until midnight by their boss
`9.→` Mr. Tam's pictures are being painted with his patience
`10.→` A way is being found to solve the problem by countries
`11.→` "Special Chinese Fried Rice" is being made in the kitchen by my mother now
`12.→` Her homework is being done in her room at present
`13.→` His car was being repaired at this time yesterday
`14.→` A bike was being ridden by Linh when we saw her yesterday
`15.→` This house was being built at 5 o’clock last Monday
*Cấu trúc:to be + V3/V-ed
Trong đó,to be chia theo thì của động từ chủ động, V3/V-ed là dạng quá khứ phân từ của động từ chủ động