选词填空，一词限用一次，需要时要变化词形。注意有两词是多余的。

Li Ying and Li Ling are twins. They have the same clothes. One day mother says, " put your coat on the table. coat is this? Please come and have a look. "

"It's not mine. Maybe it's Li Ying's" says Li Ling.

The mother looks at the coat carefully. She finds a word "Ling" on the coat. "Come here, Li Ling. l find a word on your coat. Look! This is . It isn't .