Jawaban:

1. An examination will be faced (by us) next month.
2. The school uniforms aren't worn (by them) right now.
3. Her birthday party won't be attended by the boys tonight.
4. The thieves have been caught by the police an hour ago.
5. The difficult math problem was explained by the teacher yesterday afternoon.
6. The bridge was crossed by the old man alone.
7. A kilogram of apples had been bought from the market by mother.
8. The heavy box was not carried by the boy this morning.
9. The plants in the garden are watered (by me) everyday.
10. My ex boyfriend was caught with my friend (by me) at Teladan Garden yesterday afternoon.

Penjelasan:

• Active voice is used when the sentence focuses on what the subject does. Passive voice is used when the sentence wants to highlight what has been done to the object.
• In passive voice, the subject is put after the word 'by.' If the subject is a noun, the subject must be mentioned in the sentence. If the subject is pronoun, the subject may or may not be mentioned in the sentence.