The boy swimming in the river is my friend Dave.(对swimming i

The boy swimming in the river is my friend Dave.(对swimming i The boy is swimming( across the river). Swimming in the river is dangerous 主语是Swimming吗 Swimming in the river is exciting. 1._____it is swimming in the river! Is Liu Tao swimming in the river? Swimming in the river is excing The boy likes swimming in the river in th The boy is swimming in the water.对swimming划线部分提问 Is the boy ______ in the river?He's__________in the swimming The boy is swimming across the river.变为被动语态 Look!The boy is swimming ____ with his parrents in the river