1.To his pleasure，he took out the key from the drawer.What is all ____?
A in B at C about D off
后面中文是什么意思？

2.We all find that doing exercises is important.(还同一意思句子）
We all find ___ important to do exercises.
上面这句是什么句式？

3.There are _____sleep on my uncle’s farm.
A three millions of B three million of
C million of D three millions

4.There will be only a few trees ____2004.
A by B in C until D when

5.Passenger Pigeons were d____ and gone forever.
(用dying行不行？）

6.I was writing ____ my desk.
A at B before C by D in

7.He has （put away） the newspaper.(括号部分提问）
What ___ he ___ ___ the newspaper.

8.The seeds have turned into plants. (同义转换)
The seeds have ____ ____ plants.

9.They made plans _____ all day. (excited）

10.There isn’t any water. There isn’t any food.
(合并成一句)
There is ____ water ____ food.
（neither ... nor行不行？）

问题太多，我只能简短地回答。
1.A.后面的意思是“（抽屉）里面都是些什么呢？”
2.it.前面的句子后面一部分是宾语从句，而该过后就是宾语+宾语补足语
3.B.millions of...如果加具体数字，million只能用单数。
4.A.by...到...时候。
5.dead.不可以用dying(垂死的）,这里是“已死亡”“消失”了。
6.at.做功课，上课.be at desk.同理，吃饭可以说：at table.
7.has...done with. 他怎么处置那些报纸？
8.grown into 长成..
9.exciting.让人激动的（修饰物体），如果修饰人用excited(感到激动的）。
10.可以用neither...nor...就没有...也没有...
好像也可以用there is no water or food.