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.