by Heavy rain/ cause/ widespread flooding/ this/ region/ lately.
A. Heavy rain caused widespread flooding in this region lately.
B. Heavy rain has caused widespread flooding in this region lately.
C. Heavy rain had caused widespread flooding in this region lately.
D. Heavy rain was caused widespread flooding in this region lately.
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Đáp án: B
Giải thích: Gần đây mưa lớn đã gây ra lũ lụt trên diện rộng.
