Câu 30: People believe that Viet Nam has been successful in dealing with Covid-19.
A. Viet Nam is believed to being successful in dealing with Covid-19.
B. Viet Nam was believed to have been successful in dealing with Covid-19.
C. It is believed that Viet Nam has been successful in dealing with Covid-19.
D. It was believed that Viet Nam has been successful in dealing with Covid-19.
PHẤN II. SINH HỌC (15 câu; 2.5 điểm):
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