Rewrite the sentences. Use the passive constructions.1.She has already sent for the doctor.2. They looked for this book

1. She has already sent for the doctor. - The doctor has already been sent for by her. 2. They looked for this book last week. - This book was looked for by them last week. 3. We always laugh at their jokes. - Their jokes are always laughed at by us. 4. He waited Ann for twenty minutes yesterday. - Ann was waited for twenty minutes by him yesterday.