是there is a boat in the river还是there is a boat on the river越说越糊涂

There is a boat in the river 是there is a boat in the river还是there is a boat on the river越说越糊涂 There is a boat in the m_______of the lake There is a boat in the park 变为反问句 连词成句：a,an,in,is,old man,boat,over,there,small Look!There is a boat in the c_____ of the river. In the m什么 of the river ,there is a boat Don’t swim in the river which there is a boat.用which还是where,为什么? 首字母填空,There is a boat in the c( ) of the lake（急, Is there a boat in the river?用肯定和否定回答 there is a boat in the lake下列句子中哪错了 there is a river in the picture.there are some ducks and a boat on the river.是什么意 是sitting in a boat 还是sitting on a boat? There's a boat in the m___ of the river. .a,the,Dragon Boat Festival,there,in,US连词成句器 There is a boat under the bridge 同义句 look!There is a boat on the ( r------ ) There is a boat ( )the lake.介词填空.说明原因