Bộ 4 Đề thi giữa kì 1 Tiếng Anh 12 Thí điểm (có đáp án - Đề 3)

We would have sent him a Christmas card if we____ his address last year

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We would have sent him a Christmas card if we____ his address last year.

know

have known

knew

had known

Giải thích

Đáp án D