根据句意及所给中文提示或英文解释，写出句中所缺单词，每空限填一个单词。

1. People like travelling in _________ (春天) because it is neither too hot nor too cold.

2. -What’s your father’s ________ (职业)?-He is a doctor.

3. The 30th Olympic Games will be held in London, the ________ (首都) of England.

4. Lucy is polite and _______ (乐于助人的). We all like her.

5. Our maths teacher asked you to go to his office ________ (立即). He is waiting for you.

6. Colours can change our moods and some may make us feel _________ (in need of sleep).

7. Hurry up, or we can’t ________ (arrive at) the railway station on time.