用所给词的正确形式填空.

1. I have two ______ (dictionary). One is English-Chinese dictionary, and the other is

    Chinese-English dictionary.

2. A: What's the result of the race, Mary?

    B: Jane is the ______ (one) in the race, Barbara is the ______ (two) and I am the ______ (three).

3. The Yellow River is the second ______ (long) river in China.

4. The boy is old enough to ______ (dress) himself.

5. The weather in Beijing is quite ______ (difference) from that in Guangzhou.

6. I'm very ______ (interest) in that ______ (interest) story.

7. It's more ______ (convenience) to take a taxi to the station than take a bus, but too expensive.

8. Be careful! Put the secret letter in a ______ (safety) place.

9. Lucy is ______ (jealousy) of her friend's beauty.

10. Liu Xiang and Yang Liwei are ______ (hero) in different fields.