英语首字母填空,专家来!lying on both b( ) of river Seine,on a wide fert

英语首字母填空,专家来!
lying on both b( ) of river Seine,on a wide fertile plain,it is made up of 20 municipal dietricts with a population of just over 2 million.Most Parisians live in b( ) of flats.Many people like to sit outside a cafe with a drink while they rest,chat or w( ) the passers-by.They go to work by car,on green single-decker buses.Traffic on the roads in very h( ).