More and more people come to realize that only when our motherland becamesrich and powerful _____a happy life.A we can live B can we live C we are living D are we living考察什么知识点的啊
问题描述：
More and more people come to realize that only when our motherland becames
rich and powerful _____a happy life.
A we can live B can we live C we are living D are we living
考察什么知识点的啊
答