选出与所给的词属于同一类的一项
(______)1. lunch A. dinner B. class C. floor
(______)2. go home A. home B. school C. go to bed
(______)3. thirty A. first B. forty C. second
(______)4. English class A. PE class B. music C. art
(______)5. run A. this B. go C. now
(______)6. nurse A. number B. bird C. water
(______)7. breakfast A. teacher B. real C. bread
(______)8. thirty A. today B. forty C. way