I. Choose the word which has a different sound in the part underlined. 1. A. sound B. touch C. down D. account 2. A. design B. preserve C. basic D. physical 3. A. occupation B. occasion C. shake D. miraculous 4. A. concerned B. received C. attached D. concealed 5. A. teacher B. clear C. reason D. mean 6. A. letter B. twelve C. person D. sentence 7. A. included B. received C. remembered D. annoyed 8. A. enough B. young C. country D. mountain 9. A. speech B. March C. machine D. children 10. A. face B. commercial C. center D. city

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