英语翻译A boat moves through the water of a river at9.77 m/s rel

英语翻译A boat moves through the water of a river at9.77 m/s rel There's a boat in the m___ of the river. In the m什么 of the river ,there is a boat If a boat's speed in the still water is 5m/s,and the speed o There’s{ } { }wate in the river应该怎么填【There is a lot of water a boat( )the river填介词 There is a boat in the river we can see a boat the river 是there is a boat in the river还是there is a boat on the river A boy stood on the side of the boat in the river.翻译 Some boat's a----- in the river.请问A和后面什么单词 Look!There is a boat in the c_____ of the river.