I knocked on the door but answered.

to her school from the town of Harlan, Ifollowed a road winding around the mountain.

The cigarette end ________ by a careless woodcutter ________ the big forest fire.

Mike, together with his parents, ________ going to the countryside to see his grandparents next week.

She often shares her deepest thoughts and fears with friends through QQ, as if they______ chatting in her living room.