In each sentence pair, tick the correct one. 2)stood in front of the house , he knocked at the door. standing in front of the house , he knocked at the door. 3) having written the letter, i went to the post-office. having writing the letter, i went to the post-office. 4) not have explained her anger to me, she left. not having explained her anger to me, she left. 5) the new cinema, which is locating in the city centre, is very popular. the new cinema, which is located in the city centre, is very popular. 6) i sprained my ankle while playing tennis. i sprained my ankle while play tennis.