二、按要求完成单词。
1. research → （中文）
2. condition → （中文）
3. 表面 → （英文）
4. 底部 → （英文）
5. 英里 → （英文）
6. degree → （复数）
7. communicate → （名词）
8. easy → （副词）
9. wonder → （形容词）
10. usual → （反义词）

1. 研究 2. 状况 3. surface
4. bottom 5. mile 6. degrees
7. communication 8. easily
9. wonderful 10. unusual

三、根据汉语提示完成单词，使句子意思完整。
1. By the time we （到达）at the airport, the plane had already taken off.
2. My hometown is on the （海岸）of the sea.
3. We need to communicate （紧密地）with our teammates to win the game.
4. We don't know （是否）we can take the train or need to drive.
5. The table tennis player is one of the athletes I （钦佩）the most.

1. arrived 2. coast 3. closely
4. whether 5. admire

四、用括号内所给单词的适当形式填空。
1. I (prefer) to watch football games on TV last weekend.
2. Before the trip to the Great Wall, all of us were full of (excite).
3. Jane has a strong interest in (explore) ancient cultures.
4. The library is in the (centre) part of our city, so it's easy to reach.
5. The team (successful) got to the top of the mountain at last.
6. The (develop) of the modern city brings many job opportunities.
7. No one knows the exact (deep) of West Lake.
8. Mike's dream is to be a brave (climb) and climb Mount Huashan.
9. Detian Falls is a famous (nature) wonder in Guangxi.
10. The (south) part of China has warm weather in winter.

1. preferred 2. excitement
3. exploring 4. central 5. successfully
6. development 7. depth 8. climber
9. natural 10. southern