It's a pity that he missed attending the important conference with the Head Directors. A. He

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It's a pity that he missed attending the important conference with the Head Directors.

He regrets attending the important conference with the Head Directors.

He regrets to attend the important conference with the Head Directors.

He regrets not attending the important conference with the Head Directors.

He regrets not to attend the important conference with the Head Directors.

Giải thích

Chọn đáp án C

Regret + Ving (tiếc vì đã làm gì)

Dịch: Anh ấy rất tiếc vì đã không tham dự cuộc họp quan trọng với các Trưởng phòng.