1.Look!the children are ___(swim) in the river 2.Mr green usually ___(go) to work on abus
问题描述：
1.Look!the children are ___(swim) in the river 2.Mr green usually ___(go) to work on abus
答
1 swimming 用正在进行时,（注意：双写m加ing)
2 goes 一般现在时,用第三人称单数