1 跑步对我们身体有益 (Running )is ( good )for our bodies.
2Jenny,你需要多喝一点水.Jenny,you ( need )to ( drink ) ( more )water.
3 放学后我得先做作业. I ( have ) (to )do my homework first after sclool
4 吃太多糖对牙齿不好 ( Eating )too much candy is not good for our (tooth )
没什么原因,这就是补单词.