It is better to spend money on preventing illnesses by promoting healthy living rather than spending it trying to make people better after they are ill.为什么rather than 后面要用动词的ing形式spending?它前面不是to do么?

It is better to wait and be It is better to die when life is a disgrace? is it better to be short than to be tall? It is better to tell __truth than to tell__lies. How long is it —— we last spen the holiday in the countryside together.Auntil B that Csince Dwhen it is probably better It is better to have loved and lost then never It is better to laugh than cry.修改病句 it is better to be safe than sorry 是什么意思啊 it is better 后加to do还是doing It is better to stay at home than go out. It is better to be silent ang be thought it is better to wear out than rust away it is better to refrain from smoking 中文怎么翻译 It`s better to It is better to be beautiful than to be good,better to be good than to be uglyIt is better to be beautiful than to be good,But it is better to be good than to be have better do和it is better to do有什么不同? had better do sth和it is better to do的区别