1.his father bought him a bicycle for his birthday
-> It was a bicycle that was bought ... by his father...( cụm for his birthday đặt trước hay sau by his father?)
2.The pedestrian asked the police for direction to the post office.
-> It was the police who were asked............( cụm for direction to the post office đặt trước hay sau by the pedestrian ?....giáo viên dạy mình cụm này đặt trước by the pedestrian?)