Question

[Yến Nhi]

Pick out the word whose main stress is placed differently from the other.

17. A. prevent B. pollute C. sewage D. provide

18. A. garbage B. persuade C. convince D. reduce

VI. Choose the word whose underlined part is pronounced differently from that of the others.

19. A. told    B. hold    C. snow    D. power

20. A. what    B. when    C. who    D. which