Change these sentences into passive voice 22. They held the 22nd Sea Games in Viet Nam in 2003 23. They clean the street everyday 24. The manager must sign the cheque

22. They held the 22nd Sea Games in Viet Nam in 2003

=> the 22nd Sea Games in Viet Nam was help in 2003

23. They clean the street everyday

=> The street is cleaned everyday

24. The manager must sign the cheque

=> the cheque must be signed by the manager

P/S: bị động HTĐ: S + V(s/es) + O => S+ is/am/are + VpII + (by + O)

        Bị động QKĐ: S + V-ed + O => S + was/were + VpII + (by +O)

        Bị động với động từ khuyết thiếu:

     S+ must/will/can  + Vnt => S + must/will/can + to VpII + ( by +O)