( ) Sam carried the watermelon on his bike. ( ) Then they were hungry and thirsty. ( ) Sam fell off his bike. ( ) So they bought a watermelon. ( ) Sam and Daming went for a bike ride.
( ) Many years ago,there weren't cars and buses in our city. ( ) Mike went to London last Summer. ( ) My grandpa was a doctor ten years ago. ( ) She wore a nice coat yesterday. ( ) There was a small house here. ( ) We haven't any televisions many years ago. ( ) He is learning Chinese history.
