英语：比较级,1.用适当形式填空(1)Bob is -----（tall)than Fred but he is ---

(1)Bob is taller（tall)than Fred but he is younger(young)than Fred .
(2)Carol looks fatter(fat)than the others
(3)Shanghai is one of the largest (large)cities in the world
(4)Which is heavier(heavy),a hen or a chicken
(5)How tall(tall) is Sally She is 1.55 metres tall (tall)What about Betty She is only 1.40 metres tall (tall)
(6)Bob is the stonger(strong) of the two boys Mary is the weakest(weak)of the three girls .
(7)Annie says Sally is the kindest(kind) person in the world
(8)The Changjiang River is the thid longest(long ) river in the world
(9)Sue is a little smarter(smart),than her sister.
(10)Whose school bag is heavier(heavy),yours or mine?
(11)Saturday is my busiest (busy) day in a week
(12)Her mother is getting fatter(fat) and fatter(fat)
(13)Most of the students think a lion is much fiercer(fierce)than a bear and it is the fiercest(fierce) animal in the world .
(14)The cake with meat is the best(nice)of all
2.下列句子都有一处错误,请把它指出来,并更正
(1) He is tall(taller) than l am
(2) She is a little thiner(thinner) than she looks
(3)Bob is heavier than any other boys(boy) in the class
(4)My brother"s trousers are longer than my(mine)
(5)It is one of the longest story(stories) that l have ever read .
(6)Mary is (much friedliest--改成the most friendly) person in the class
(7)Which city is largest(larger) ,Beijing or Guangzhou?
(8)Jack is naughty .Mike is very(much) naughtier than Jack