56．Guangdong is in _______________ (南方的)China．

55．Zhanjiung is ______________(出名)for sea food．

54．Don’t ______________ (担心) about me．I’m well now．

53．I ______________ (写) a letter last night．

52．There are ______________ (十二) students in my art club．

51．The man lives _______________(单独地)，but he doesn't feel lonely．