Once ________ (环境的) damage is done, it takes many years for the system to recover.

In some regions, people wear a ________ (各种) of protective hats, depending on the season.

用合适的词填空，括号中给出的是所要填的词的词干部分。

With the development of computers and the Internet, it’s much easier for me to ________ (load) papers.

They made the fire burning all ________ the night to keep warm.

The sun, which the earth goes round, sends ________ light and heat.

If you want to succeed, do take every chance that comes ________.

It's impolite to sit________(脚尖对着别人).

Nodding the head means agreement,________(而摇头)means disagreement.

He spoke so fast that he________(不能使别人明白自己的意思).

________(正确使用身体语言) is of great importance.