`text{Exercise 1:}`
`text{1. The mail is delivered every day.}`
`text{2. The export division is managed by Mr. John.}`
`text{3. Our exercises are corrected by the teacher.}`
`text{4. The president is called every day.}`
`text{5. English is spoken all over the world.}`
`text{6. Homework is done every day.}`
`text{7. Milk is used for making butter and cheese.}`
`text{8. Litter is thrown in the bin.}`
`text{9. A lot money are spent on advertising everyday.}`
`text{10. His store isn't believed.}`
`text{Exercise 2:}`
`text{1. That house was destroyed by fire.}`
`text{2. The lecture was attended by the students.}`
`text{3. We were disappointed very much by the movie.}`
`text{4. The thief was captured easily by the police.}`
`text{5. The money was returned by John last night.}`
`text{6. The room was filled by smoke.}`
`text{7. That book was taken from the desk by Bob.}`
`text{8. A dancing class was started last week.}`
`text{9. The accident was seen by Mr. Smith.}`
`text{10. Our written work was returned to us by the teacher.}`
`text{Công thức:}`
`text{Thì hiện tại đơn:}`
`text{- S + tobe + V(PII) + (by + O)}`
`text{Thì quá khứ đơn:}`
`text{- S + tobe(was/were) + V(PII) + (by + O)}`
