I don’t know the ______ (原始的) meaning of the word, but I know how to use it, anyway.
You’d better a____________ to your mother for your rudeness.
It is o____________ that a healthy diet does us a lot of good.
Riding a bike helps develop a child’s sense of b____________.
65. What the disabled need is more than our s______.
64. He felt a bit a______ at his brother’s following him everywhere.