Jawaban:

1. (kalimat kurang jelas)

2. A new store is opened by them in the middle of this town.

3. Our headmaster's questions have to be answered by us.

4. Indonesia Raya is being sung by Susi now.

5. English has been studied by me.

6. Some of the durian trees will be planted by Jhon in his field.

7. Some of gardening technic are taught by our teacher in her lesson.

8. A novel was read by him.

9. Her medicine must be eaten by my sister.

10. Your letter to your parents should be sent by you now.

Penjelasan:

RUMUS ACTIVE & PASSIVE VOICE:

1. Simple Present Tense

Aktif : S + do/does + V1

Pasif : S + to be (am, are, is) + V3 + by + O

(NOMOR 2,3,7,9,10)

2.Present Continuous Tense

Aktif : S + to be (am, are, is) + V1-ing + O

Pasif : S + to be (am, are, is) + being + V3 + by + O

(NOMOR 4)

3. Present Perfect Tense
Aktif : S + have/has + V3 + O
Pasif : S + have/has + been + V3 + by + O

(NOMOR 5)

4. Simple Past Tense
Aktif : S + V2 + O
Pasif : S + to be (was, were) + V3 + by + O

(NOMOR 8)

5. Simple Future Tense
Aktif : S + will not + V1 + O
Pasif : S + will be + V3 + by + O

(NOMOR 6)

Semoga membantu :)