`1.` Many scientists now believe that an asteroid collision caused the extinction of dinosaurs 65 million years ago. The exti

`1.` Many scientists now believe that an asteroid collision caused the extinction of dinosaurs 65 million years ago.
The extinction of dinosaurs
It .
`2.` Scientists say that a volcano eruption buried the city of the ancient Roman city of Pompeii in 79 AD.
A volcano eruption
It

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  1. Cấu trúc câu bị động chung : S + V + O
    –> O + be+ V(ed/ c3) + ( by S )…
    S + believe/ think/ say/… + that + S + V +O
    = It + be + thought/ believed/ said/… + that + S + V + O
    = S + be + thought/ believed/ said/… + to + Vnt/ have +V(ed/ c3)…
    1, The extinction of dinosaurs is believed to have been caused by an asteroid collision 65 million years ago.
    it is believed that an asteroid collision caused the extinction of dinosaurs 65 million years ago.
    2, A volcano eruption is said to have buried the city of the ancient Roman city of Pompeii in 79 AD.
    It is said that a volcano eruption buried the city of the ancient Roman city of Pompeii in 79 AD.

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