Never before _______ so rapidly developing as it is today． 

英语翻译：他是公司的首席执行官 ,但总是平易近人。

Since we have a focused subject ，we should not talk ________.

英语翻译：我希望我的书将阐明我们面临的复杂问题。

They should try to ________ their usual inhibitions and join in the fun.

It has been found that a strong ________ help overcome the effects of distraction.

People who can ’t _______ between colors are said to be color -blind.

英语翻译：你为什么把失败视为当然呢?

Anxiety can ________ with children ’s performance at school.

Basically，these attitudes amount to a belief ________ leisure can and should be put to good use