It was only__________ he told me his surname that I realized that we had been

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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.

It was only__________ he told me his surname that I realized that we had been to the same school.

then

until

as soon as

when

Giải thích

Đáp án D

Dịch câu: Chỉ khi anh nói với tôi họ của anh tôi mới nhận ra rằng chúng tôi đã học cùng trường.

Then: sau đó

Until: cho đến tận khi (Ở đây sẽ đúng nếu như sử dụng It was not until….)

As soon as: ngay khi

When: khi (only when: chỉ khi)