When Rice was eighteen he ______ going around with a strange set of people and staying out very late.

In no case ______ ever betray your better nature.A．shou...

单项选择题In no case ______ ever betray your better nature.

A new theory of the origin of language is the most ____...

单项选择题A new theory of the origin of language is the most ______ feature of the book.