题目内容：

IV.下列句子都有一处错误,请把它圈出来,并在后面的横线上更正.(10%)
1.He is tall than I am.________
2.She is a little thiner than she looks.________
3.Bob is heavier than any other boys in the class.________
4.My brother's trousers are longer than my.________
5.It is one of the longest story that I have ever read.________
6.Mary is much friendliest person in the class.________
7.Which city is largest,Beijing or Guangzhou?________
8.Jack is naughty.Mike is very naughtier than Jack.________
9.London is the bigger city in Britain.________
10.June is hot.But August is much hot than June.________