The children swim across the river 改为一般将来时

The children swim across the river 改为一般将来时 swim across the river还是swim cross the river? 句式转换：1.Swim in the river,please.（改为否定句） 2.The children are （ Did you swim across the river Have you swam across the river swim ( ) the river 是填across还是through? same and I can swim across the river This little boy_________(swim)across the wide river next yea The children want to go_______(swim)in the river. I can swim across the river.为什么用across而不是cross? There is a bridge across the river.改为一般疑问句 They can swim in the river.(改为否定句） Jihn,please swim in the river.改为现在进行时