WHEN I _________ THIS MORNING , MY ROOMMATE ______ ALREADY .A. WAK...

22. - KIEM TRA 1TIET SO 1 TRON 4 DE
KIEM TRA 1TIET SO 1 TRON 4 DE
22. When I _________ this morning , my roommate ______ already .A. wake / has left B. woke / had left C. was waking / left D. am waking / leaves