I decided to train as a teacher.(同义句改写)
I________ ______ ______ ________to train as a teacher.
He often played computer games in the past.（同义句改写）
He__________ ________ _______computer games.
Tom watered the flowers yesterday.（改为被动语态）
The flowers_____ _______ by Tom yesterday.
I often hear him sing the song. （改为被动语态）
He is often________ ____ _____the song.
He operated on the patient yesterday. （同义句改写）
He ______ _____ __________ _____the patient yesterday.