词汇。 1. It's said playing with fire cause

问题：

词汇。

1. It's said playing with fire caused a lot of _________ (危险) every year.

2. The girl always _________ (出现) on the TV when she was young.

3. My cousin is crazy about __________ (收集) old coins these years.

4. I know those famous __________ (科学家) books sell well.

5. Today the old woman looks even _________ (虚弱) than she did yesterday.

6. The old woman is too weak to look after __________ (she).

7. Next Friday is our grandfather's _________ (seventy) birthday. Let's have a party.

8. How _________ (care) the girl is doing her homework and she often gets good results.

9. After a few __________ (month) rest he got better.

10. He is an __________ (help) boy because he always thinks of himself.