根据题中所给的汉语或首字母写出符合句意的单词的正确形式。

1. The boy is too young to draw a                  (笔直的) line on the paper.

2. His interest in this subject will increase __________ (逐渐地).

3. Passengers are kindly r__________ not to smoke in the bus.

4. There is an __________ (表情) of anger on his face now.

5. He is so s__________ that no one can persuade him.

6. We are looking for someone who is                  (可靠的) and hard-working.

7. I'm rather c__________ about my mothr's health.

8. Sudden rainstorms are __________ (频繁的) on this coast.

9. Of the two the l__________ is far better than the former.

10. One of the d __________ of the job is the long work hours.