anther kaplan sc

dongdongdong

It has been said that(all one can do for a spained ankle is leave it alone while it heals itself,ice it and) to lie with it in a slightly position.
4.the only thing that can be done for a sprained ankle is leave it alone for a sprained ankle is leave it alone while it healls itself,ice it and

4 is the anwer, but I wonder 后面明明有三件事，为什么用the only one?

猫猫头

可以把后面的三件事情看作一个整体。。。
其他选项都不好。。。