TOEIC Part 5 練習問題 P5_633
The CEO has been ------- on the company's success since 2015.
✅ 正解：focused
✅ 正解根拠:has been+______+on は過去分詞。be focused on の定型。
🎯 秒解きポイント:be focused on=concentrate on。
✅ 正解根拠:has been+______+on は過去分詞。be focused on の定型。
🎯 秒解きポイント:be focused on=concentrate on。