change the voice
1. what causes an earthquake.
2. could you help me sir.
3.what are you thinking of

1. What causes an earthquake?
What is an earthquake caused by?
2. Could you help me sir?
Could I be helped by you, Sir?
3.What are you thinking of?
What is being thought by you?

  • 2
What is an earthquake caused by?
Sir could you help me?
What is being thought by you?
  • 3
What are you looking for?