It is possible that the fire in the ship was started by a bomb. They say that a

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Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

It is possible that the fire in the ship was started by a bomb.

They say that a bomb started the fire in the ship.

The fire in the ship might have been started by a bomb.

It shall be said the fire in the ship had been started by a bomb.

The fire in the ship is known to have been started by a bomb.

Giải thích

Đáp án B

“might” + have done: phỏng đoán về một việc có thể đã xảy ra trong quá khứ