... YOU WERE SITTING AT YOUR DESKS WORKING HARD LAST WEEK, WE WERE...

15. - BAI TAP TRAC NGHIEM TIENG ANH 12
BAI TAP TRAC NGHIEM TIENG ANH 12
15. ... you were sitting at your desks working hard last week, we were sitting on a plane bound for Hawaii. A. Despite B. While C. Whenever D. As soon as