=>
I/
1. He opened the lion's cage to feed the lion.
2. He left his rifle outside not to frighten his wife.
3. I took off my shoes not to make any noise.
4. I sent him out of the room so that he couldn't hear my conversation with Mary.
5. He learned English well so that his mother would be happy.
II/
6. Put the cork back so that someone may not knock the bottle over.
7. They talked in whispers so that I couldn't overhear them.
8. Airplanes carry the parachutes so that the crew can escape in case of fire.
9. I am insuring my life so that my children will have something to live on if I am killed.
10. Please shut the gate so that the cows can't get out of the field.

I.

 1. He opened the lion's cage to feed the lion./Tp feed the lion, he opened the lion's cage

 2. He left his ride outside not to frighten his wife./Not to frighten his wife, he left his ride outside.

 3. I took off my shoes not to make any noise./Not to make noise, I took off my shoes.

 4. I sent him out of the room not to hear my conversation with Mary./Not to hear my conversation with Mary, I sent him out of the room.

 5. He learned English well to his mother felt happy/To his mother felt happy, he learned English well.

II.

 1. Put the cork back because someone may knock the bottle over.

 2. They talked in whispers so that I can't overhear them.

 3. Airplanes carry parachutes so that the crew can escape in case of fire.

 4. I am insuring of my life because I want my children to have something to live on if I am killed.

 5. Please shut the gate because I don't want the cows to get out of the field.

Study well.

@stubapid.alex