另外请看看这些选择题:
A.in B.on C.in or on
1.There is a bird () the apple tree.
2.There is a apple () the apple tree.
3.The bird is() the top of the apple tree.
4.The bird is() the trunk of the apple tree.
5.The apple which dropped from the tree into the trunk shoots of the tree among the many leaves is () the apple tree.

Are these questions too difficult for everyone to answer? Or just too stupid?

应该不对

你这句话 谓语用的太多了。。。 哪里来这么多doesn't。 教你个办法，没语感的话，先写出陈述句，然后改疑问句（刚学英文的笨办法，不过对某些人应该挺有效）
Isn't the bird the part of a tree?
用belong的话，改改就可以
Doesn't the bird belong to the part of a tree?

我觉得你这是个双重否定的反义疑问句。表示否定吧，
那就是
The bird doesn't belong to the part of the tree，does they？

one day this all will change。
其中的this all。 为什么可以这么用？ 为什么不是 these all？
这究竟是为什么？

Isn't the bird a part of the tree?
难道鸟不是树的一部分么？

另外请看看这些选择题:
A.in B.on C.in or on
1.There is a bird (in) the apple tree.
2.There is a apple (on) the apple tree.
3.The bird is (in) the top of the apple tree.
4.The bird is (on) the trunk of the apple tree.
5.The apple which dropped from the tree into the trunk shoots of the tree among the many leaves is () the apple tree.
从树上掉下来的苹果怎么了？后面真心看不懂。

难道鸟不是不属于树的一部分吗? → 难道鸟是树的一部分？

我无语。。。。所以到底是谁对？
谁的句式比较完美？

中国人的悲哀，英国人的悲哀