下列每个句子中均有一处错误。请按要求将每个句子中的错误找出来并加以改正。
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，并在该词的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.每句只有一处错误。
小题1:After checking all the lights were turned off and that all the window were closed,the old man went home.
小题2:I don’t know this city at all.This is the first time I come here.
小题3:What an important advice the manager gave us the other day!
小题4:He didn’t make clear when and where the meeting would be held.
小题5:The students must get the blackboard cleaning before class.
小题6:There are more than one boy in our class from the country town.
小题7:All the people in my family loved the  apartment for the moment we saw it.
小题8:After graduation from the key university,Tom went abroad for his further education.
小题9:As we know,this is a properly way for us to learn a foreign language.
小题10:It is true that the number of people studying English in China is increasing rapid.