琵琶鱼是不是雌雄同体:英语！！！！！！急呀

正确答案为
1.his bag is heavier than hers.
2.My pen is broken .I must buy one/another.
3.Which is nicer，a dog or a bird？按照语法是这样改，但是没有这样比较的。
4.Why does your frend call you Maoran?
5.Everyone in this class is good at singing.
6.Please buy some cakes with meat in them.

heavier nicer is with

1 heavier
2 is>was
3 nicer
4 do>did
5 are>is
6 have>with

heavier
it--one
nicer
do--does
are--is
have--with

1.his bag is heavy than hers。（ ）
heavy 改为 heavier

2.My pen is broken 。Imust buy it.（ ）
这句应该不是这样的。
It 改为 one

3.which is nice，a dog or a bird？（ ）
nice 改为 nicer

4.why do your frend call you maoran（这个词好象打错了，老师写的我看不清）（ ）
do 改为 does 或者friend 改为 friends

5.Everyone in this class are good at singing。（ ）
are 改为 is

6.Please buy some cakes have meat in them。（ ）
have 改为 with

1.hers....her
2.it......one
3.nice....better
4.frend...friend 语法没有错误，应该为正确或拼写错误
5.are.....is
6.应为：Please buy some cakes that have meat in