2. This bag must be sent by the postman by airmail (Bị động với modal verbs: modal verb + be + p.p)
3. This cupboard can be easily mended by her uncle (trạng từ thường đứng sau tobe trong câu BĐ)
4. Can these questions be answered by your sister?
5. She will be taken to school tomorrow by her mother (Bị động TLĐ: will be + p.p)
6. Some friends of ours have to be asked to join us (have to be + p.p; we được lược bỏ trong BĐ)
7. The painting exhibition will be seen tomorrow (everyone được lược bỏ trong BĐ)
8. Those maps must be finished by 7 o'clock
9. This letter should be sent to his aunt immediately by Rock
10. That package has to be returned by your brother today
