Jane enjoyed the party, but as _____ Alex, he was simply bored.
Ta có thành ngữ: as for someone/something = còn như, về phần. Đáp án là A.
Jane enjoyed thc party, but as for Alex, he was simply bored. (Jane thích buổi tiệc, nhưng về phần Alex, anh ta hoàn toàn cảm thấy chán.)