_____Paul realize that he was on the wrong flight No sooner had the plane taken off than

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

_____Paul realize that he was on the wrong flight.

No sooner had the plane taken off than

Only after the plane had taken off

It was not until the plane had taken off that

Not until the plane had taken off did

Giải thích

Đáp án là D.

Đây là câu kể nhưng realize : không chia quá khứ -> chọn ý D có yếu tố đảo trợ động từ: Not until + N/clause (chia ở quá khứ hoàn thành) + did + S + V: mãi đến khi…thì…