1.Somebody has taken my briefcase

→My briefcase has been taken

2. The teacher returned our written work to us

→ Our written work have been returned to us by the teacher

3. She had finished her report by noon.

→Her report had been finished by noon

4. She bought some cups of tea to the visitors in the next room

→ Some cups of tea was bought to the visitors in the next room by her.

5.The doctor ordered him to take a long rest

→He was ordered to take a long rest by the doctor

6.They started a dancing class last week

→A dancing class was started last week 

7.The mailman have already delivered the mail

→The mail had already been delivered by the mailman

8.He had to finish his work on time

→His work had to be finished on time

9.You needn't do all the homework

→All the homework needn't be done by you

10. They will send you the money at the end of the month

→ They will send you the money at the end of the month

$\text{@Vân}$

$\text{#Mong câu trả lời hay nhất ạ}$

$\text{#Chúc bạn học tốt nha}$

1.My briefcase has been taken.

2. Our written work have been returned to us by the teacher.

3.Her report had been finished by noon.

4. Some cups of tea was bought to the visitors in the next room by her.

5.He was ordered to take a long rest by the doctor.

6.A dancing class was started last week .

7.The mail had already been delivered by the mailman.

8.His work had to be finished by him on time.

9.All the homework needn't be done by you.

10.You will be sent the money at the end of the month.

Chúc bạn học tốt ! 

CHo mk xin CTLHN 

Thanks!