Our neighbourhood used to be very quiet .However , these days1 things are happening in our neighbourhood and everyone is unhappy . Zhao Jun , the local school teacher is extremely 2 . When he was interviewed (采访) by the local newspaper , he said , “ Every night we hear strange noises 3our window . My wife thinks that it could be an 4 , but my friends and I think it must be teenagers (青少年) having 5 . My parents called the police , but they can't 6 anything strange . They think it might be the 7. I don't think so!”
       Zhao Jun's next door neighbour XiangDan is8 , too . “ At first ,I thought it might be a cat , but I can't see a cat , and I still hear the noises outside .” Everyone in our neighbourhood is worried , and everyone has his or her own 9 . There must be something 10the homes in our neighbourhood , but what is it ?