1. 选词填空（可改变形式）

after，because of，until，when，because，so， although

1. （1） the snow, the pilot had to land the plane at an airport in another city.
3. （2） Let's wait the rain stops.
5. （3） I am afraid I don't have anything.
7. （4） it began to rain, he kept on working.
9. （5） Qingdao is a lovely city, many foreigners come to live in it.
11. （6） All the students were sleeping the earthquake happened.
13. （7） I will go out to play with you I finish my homework.