`4`. Spanish is spoken in many countries.
`5`. Stories are often read by the children in the evening.
Ex 3
`1`. That cake wasn't made by Alice.
`2`. Newspapers are bought everywhere in the city.
`3`. A textbook will be published by that company next year.
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Câu bị động thì hiện tại đơn (câu 4,5,2): S + is/am/are + PII + (by + O).
Câu bị động thì quá khứ đơn (câu 1): S + was/were + PII + (by + O).
Câu bị động thì tương lai đơn (câu 3): S + will be + PII + (by + O).