exercise : passive voice

BBIO lovers sudah membaca penjelasan tentang kalimat pasif belum, ya? Kalau belum silahkan baca lebih dulu. Karena soal latihan di bawah ini tentang kalimat pasif. Silahkan klik link materi penjelasnn tentang kalimat pasif yang ada pada level advance. 
Rubahlah kalimat-kalimat di bawah ini menjadi kalimat pasif!

1. Somebody calls the president everyday.
2. John is calling the members.
3. Martha was delivering the documents to the department.
4. The members have repealed the amendment.
5. The delegates had received the information before the recess.
6. The teacher should buy the supplies for this class.
7. Somebody will call Mr. Watson tonight.
8. The fire has caused considerable damage.
9. The company was developing a new procedure before the bankruptcy hearing began.
10. John will have received the papers by tomorrow.

Judul Spoiler:

1) The president is called by somebody everyday. 2) The members are being called by John. 3) The documents were being delivered to the department by Martha. 4) The amendment has been repealed by the members. 5) The information had been received by the delegates before the recess. 6) The supplies should be bought for this class by the teacher. 7) Mr. Watson will be called by somebody tonight. 8) The considerable damage has been caused by the fire. 9) A new procedure was being developed before the bankruptcy hearing began. 10) The papers will have been received by John tomorrow.