下面文中共有8处语言错误，要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏词符号（/\），并在该句下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改8处，多者（从第9处起）不计分。
Dear David,
I’m glad that you’ve noticed our efforts directed towards environmental protection. Thanks you for your concern.
As too much use of plastic bags have caused serious white pollution, our government encourages us to use environment-friendly shopping bags. These bags are made of a variety materials that can be easily treated when they bee rubbish. Besides, it can be reused. More and more people in China have realized the advantages of such bags but started using them.
I believe that the widely use of these shopping bags can greatly improve our environment. This is one of the many more steps we are taking to make our country an even clean place.
Yours,
Li HuaThanks→Thank
网友回答
(答案→)Thanks→Thank
解析：
【小题1】考查动词。Thanks =thank you ,因为后面有you ，所以把thanks 改成thank。
【小题2】考查谓语动词。因为主语部分：too much use of plastic bags塑料袋的过多使用，主语不是bags,而是use，所以谓语动词改用单数，所以have改成has。
【小题3】考查固定短语。根据：a variety of + 复数名词，各种各样的，所以在variety前加a .
【小题4】考查代词。此句中主语应该代指的是environment-friendly shopping bags.环保购物袋，是复数，所以把it改成they。
【小题5】考查连词。根据More and more people in China have realized the advantages of such bags but started using them.越来越多的人们已经意识到这样的袋子的好处并且开始使用。在意识到好处和开始使用之间是顺承关系而不是转折关系，所以but改成and。
【小题6】考查形容词副词。I believe that the widely use of these shopping bags can greatly improve our environment.我相信这些购物袋的广泛使用能够改善我们的环境。广泛修饰名词使用，应该用形容词，所以widely改成wide。
【小题7】考查形容词的比较等级。This is one of the many more steps we are taking to make our country an even clean place.这是我们为了使我们的环境更好所采取的许多措施之一。此句中more是多余的，没有比较的对象，所以把more去掉。
【小题8】考查形容词的比较等级。根据句意和关键词;even + 比较级，所以clean改成cleaner。