( ) People speak English in America. ( ) San Francisco is a nice city. ( ) You were so cute. ( ) Sam wasn't tall then. ( ) Who is that little boy? ( ) Shanghai is in the east of China.
( ) 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.