高二英语：关于原句改定语从句或状语从句

because the professor is devoted to his work,he cares little about any other things

when he is dressed in a white uniform,he looks more like a cook than a doctor

because kate was worn out for a long walk,Kate called and said she couldn't come to the party.

because/when the balloon was freed of the barden of ice,it climbed up and drifted away

alough Vietnam is once condered to be a a difficult and even dangerous place,it is now a friendly destination that welcomes vistors from all over the world.

though the two girls were told to stop.they kept on talking at the meeting.

once such a chance was lost,it might never come again

as your composition is written carelessly ,it is full of mistakes

1. The professor who is devoted to his work cares little about any other things.
2. He who is dressed in a white uniform looks more like a cook than a doctor.
3. Kate whi is worn out after a long walk called and said she couldn't come to the party.
4 The balloon that is freed of the barden of ice climbed up and drifted away.
5. Vietnam ,which was once considered a difficult and even dangerous place is now a friendly destination that welcomes vistors from all over the world.
6. The two girls who had been told to stop kept on talking at the meeting.
7. The chance , which was lost, might never come again.
8. Your composition which is carelessly written is full of mistakes.