用所给单词的适当形式填空。

1. He hurt his leg in a car _______ (事故) last year.

2. He _______(假装) not to see me when he passed by.

3. Let that be a _______(警告) to you.

4. The doctor said that he had a _______ (严重的) heart disease.

5. Be _______(小心) when you are crossing the road.

6. Look! They are _______ (decorate) the Christmas tree.

7. There is a dog _______ (lie) on the floor.

8. Brian was _______ (take)the hospital when he hurt.

9. Don’t be a _______(care) driver, or you will hurt others and yourself, too.

10. he went into the room _______(quiet), the baby is sleeping.