Using BY to introduce the agent in passive constructions
Q1. The book was written ___ J.K. Rowling
BY introduces the agent in passive voice. The author did the writing, even if the sentence structure suggests otherwise.
Q2. The window was broken ___ the storm
BY indicates the agent or cause. The storm bears responsibility.
Q3. The decision was made ___ the committee
BY shows who performed the action. The committee decided. Accountability exists.
Q4. This painting was created ___ Picasso
BY identifies the creator. Picasso wielded the brush.
Q5. The cake was baked ___ my grandmother
BY introduces the doer. Grandmother deserves credit. And possibly a cup of tea.