He saves £500 a year. By the time he____________ (retire) he ____________ (save) £20,000.Đoạn văn78/95He saves £500 a year. By the time he __________ (retire) he __________ (save) £20,000.Click vào chỗ trống để nhập đáp án. Nhấn Enter để xác nhận, Esc để hủy.Giải thíchretires/ has retired - will have saved