对于我们来说使用电动牙刷刷牙很容易.It's ______ for us ______ ______ our teeth by using electric toothbruses.
问题描述:
对于我们来说使用电动牙刷刷牙很容易.
It's ______ for us ______ ______ our teeth by using electric toothbruses.
答
填 easy to brush
保证准确率~