a ship___the river填什么

A river runs t___ the city center ,空白填什么 there is a small br- across the river.填什么 请问 it is smaller than a river .it is a s.后面该填什么啊? a boat( )the river填介词 It's very dangerous to swim in a d____ river.中应该填什么? in the distance,b_____the river ,there was a small town.填什么? tom is__ __the river and__with a boy空格应填什么 she can swim a ___ this river横线处填什么 Between the two halls（）a deep river.应填什么 an old man was waiting for a ride （ ）the river空格应该填什么介词 an old man was waiting for a ride （ ）the river空格应该填什么介词 为什么不 括号内填什么which is () ,the Yangtze River or the Yellow River?