children - a child , men - a man, women - a woman, people - a person, mice - a mouse, teeth - a tooth, feet - a foot, geese - a goose, sheep - a sheep, fish - a fish , deer - a deer, oxen - an ox,

singular plural

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？