—How was that? —I was chatting on line ______ the power went out.

 I arrived half an hour earlier ______ I had time to talk with him before the meeting.

--What was the party like? --Wonderful. It is years_____________ I enjoyed myself so much.

 I hope you don’t mind me asking, ____ where did you buy these books?

The second-hand car she bought was almost new ,______,it was in good condition.