下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1．每处错误及其修改均仅限一词；

2．只允许修改l0处，多者（从第ll处起）不计分。

I feel quite sure the chemistry test that we’re going to have tomorrow. The teacher has  already told us exact what to study and I think my grades on homework has been good．In a fact, I think chemistry has always been one of the subjects that I enjoy it most. Susan and I had already spent two hours review pages 115-140 tonight. We are going to devote another hour to practise with some of the sample(实例) problem. Then I will ready for the test. 

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

       增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

       删除：把多余的词用斜线（\）划掉。

       修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1．每处错误及其修改均仅限一词；

2．只允许修改10处，多者（从第11处起）不计分。

Though great progress has been made in science these years, but there are still many people live

in poor conditions．They make their living by collecting and selling used thing．Their children

cannot go to school because they have not enough money to send their children to there．Why

you think so many people still suffer from poverty now?  The answer lies on the population

explosion．A president of a developing country once say: “It is us who are to blame for the

poverty because we used to ‘produce’ children without limit．” Although this few words sound

simple enough, they have clear pointed out one of the causes of the population explosion．

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1.每处错误及其修改均仅限一词；

         2.只允许修改10处，多者（从第11处起）不计分中学

Great changes have been taken place in the way people communicate with each other. In the

past people write letters to share informations and later they talked with each other in the telephone

Now more and more people use our own mobile phones to communicating. And instead writing on

the paper, they e-mail to each other on the computer. As a result, people find that quicker and easier

to communicate, and at the same time some people feel that they become poorer in writing. They

worry about whether people can be as closely as before.

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分。

例如： It was very nice to get your invitation to spend ∧ weekend with you．Luckily I was the                            am completely free then, so I’ll to  say “yes”．I’ll arrive in Bristol at around 8p．m．in Friday evening． on