1. 根据句意及汉语提示完成单词。

1. （1） When you pay the bill，you should ask for a (收据)．

3. （2） The exhibition gives local artists an opportunity to (展出)their works.

5. （3） You must get a (执照)if you want to run a shop.

7. （4） Will it be (方便)to come in the afternoon?

9. （5） We must (探索)all possible ways to increase production.

11. （6） The flight has been delayed because of traffic(拥塞)at London airport.

13. （7） How do you think the actor will(反应)to your idea?