一些特殊的名词复数及短语
1. leaf_________________ 2. life_________________3. thief_________________ 4. knife_________________5. shelf_________________ 6. half__________________7.roof_________________ 8.German_______________ 9.sheep________________ 10.deer_________________ 11.child_________________ 12.woman teacher________ 13.tooth_________________ 14.foot_________________ 15.people_______________ 16.postman______________ 19.boy________________ 20.key___________ 21.story_______________ 22.family______________ 23.century_____________ 24.baby_______________ 26.tomato_______________ 27.potato________________ 28.radio_________________ 29.zoo_________________ 30.kilo_________________ 31.photo________________ 32.businessman_________ 33.woman_______________ 34.man__________________ 35.difficulty____________ 36.monkey_____________ 37.mouse_______________ 谁能够帮我解决一下,变成复数