根据下列句子及所给汉语注释，在句子空缺处写出各单词的正确形式（每空只写一词）。
Thomas Edison _______(发明) the light bulbs.
He went into the room _______(慢地) and sat down.
You can’t solve the problems ______(除非) you do it carefully.
He has a kind ______(心) and often helps others.
Some animals, for example, elephants and koalas, live on grass and _______(树叶)
My uncle bought me an Ipad for my _____(第十二) birthday.
So far, we’ve ________(成功) in saving thousands of people in danger.