I haven't seen him since I left school. → I last
A. seen him since I left school
B. seen him when left school
C. saw him when I left school
D. saw him since I left school
Đáp án: C
Dịch: Tôi chưa từng thấy anh ấy từ khi tôi rời trường. – Tôi thấy anh ấy lần cuối khi tôi rời trường.