增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
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：每个句子有一处错误。
【小题1】I'm very sorry to have had you wait for so long.
【小题2】You ought be careful about this kind of feverish cold.
【小题3】The door needs painted.
【小题4】The lecture made me realize the importance of a balance diet.
【小题5】It is not polite to spy in what girls are wearing.
【小题6】As a matter of fact, I landed in Britain from accident.
【小题7】He did not look forward to be in debt.
【小题8】It wasn’t a good thing; on contrary, it was a huge mistake.
【小题9】I am not sure that he is willing to help me.
【小题10】Walking in the street, I often see beggars in the rags.
【小题11】They are putting too much carbon dioxide into the atmosphere, which prevents heat from escape the earth.
【小题12】The earth became so violently that it was not clear whether the shape would last or not.
【小题13】After a fire broke up in the lab, a lot of equipment was destroyed.
【小题14】It there was a pity that you didn’t go to the talk.
【小题15】What he needs most are money.