改错：where's Tom?He's up there on the tree with Bill.

where's Tom?He's up there in(在树上用in,长在树上的用On,比如果子)the tree with Bill.
In the tree?Where?
There's a treee house there.
What's(根据回答来看这里应该用what's提问树屋里有什么) in it?
There's a small bed,a table and a clock.
How many breads(复数加s) do you want?
It's time for bed.（for是介词,后接名词或动词不定式,还可以改成it's time to go to bed.）
Whose books are there?(这里应用所有格whose提问,后面用there就表示那些,用those是纯正的中式英语,是不对的)
很简单的句子,希望lz好好学习,习惯英语的表达方式,看多则记多,自然就会了.加油吧!

on the tree ? where ?There's a tree house . what's in it . There is a small bed ,a table and a clock .How many bread do you want ?It's time to go to bed .Whose books are those.

我只看出来两句...
How much bread do you want? It's time to go to bed.
Whose books are those?