1. A. know B. knee C. knock D. kitchen2. A. hour B. height C. hire D. hill3. A. vegetable B. eight C. cherry D. level4. A. dangerous B. perfect C. mineral D. presence5. A. ankle B. dairy C. back D. challenge6. A. deliver B. commercial C. offer D. burger7. A. pineapple B. rice C. olive D. ice cream8. A. peel B. eel C. beer D. cheese9. A. catches B. washes C. glasses D. takes10. A. works B. plays C. stops D. laughs