500 Câu trắc nghiệm tổng hợp ngữ pháp Tiếng Anh thi THPT Quốc gia (Phần 1)
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________ at the airport more early, he would have met his friend

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________ at the airport more early, he would have met his friend.

Then he arrived

Had he arrived

When he arrived

He has arrived

Giải thích

Chọn B