HOW LONG DID HE USE TO WORK EVERY DAY

26. - KIEM TRA HKI TIENG ANH 10 26. - KIEM TRA HKI TIENG ANH 10
Tiếng Anh KIEM TRA HKI TIENG ANH 10
26. How long did he use to work every day? -> He used to work 20 hours a day.---The end---