100+ câu trắc nghiệm tổng hợp Thư tín thương mại có đáp án - Phần 1

When you don't know the name of a person and cannot find this informatio you may write

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When you don't know the name of a person and cannot find this informatio you may write

To whom it may concern

To the person in charge

To whoever reads this

To the receiver

Giải thích

Chọn đáp án A