His father was (read, reading) a newspaper. I had my watch (repair, repaired, repairing). Look at the boy (sleeping, sleeps, slept) under the tree. I have some (using, used) stamps. This is the book (to write, written) in easy English Look ar the (cry, crying) child. I saw her (cooked, cooking) in the Kitchen. Father made her (clean, to clean, cleaning) the room. I saw him (to play, played, playing) the piano at the concert. I never saw a whale (catch, caught, catching) on the beach. I saw Tom plays the violin. He stood watched TV in the room. Have you ever heard him sang a pop song? This is the house to build by Mr. Kim? We have been studied English for three years. 위에 빨강색이 답이라 는데 이유를 정확히 설명해주세요.. 밑에는 틀린 문법 을 찾아라는데 예를 들어 1번의 plays를 playing으로 고 쳐야 하는 이유를 모르겠어요. 설명해주세요..