21. A. story B. medium C. provide D. lecture
22. A. second B. teacher C. station D. research
23. A. enjoy B. Prison C. destroy D. advise
24. A. Prepare B. about C. behave D. reason
25. A. signal B. Transport C. record D. because
26. A. support B. doctor C. Repeat D . receive
27. A. appeal B. respect C. prevent D. answer
28. A. Pretty B. Attract C. Discuss D. suppose
29. A. waving B. walking C. pointing D. between
30. A. Instance B. polite C. apply D. explain
mong mn giúp mk vs ạ
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Sinh Học lớp 12
