根据句义，用括号内所给词的适当形式填空。

1. I met an old friend of _________ (I) in the Summer Palace last Sunday.

2. With the _________ (develop) of science, we can enjoy life better.

3. Please tell me the _________ (win) telephone number, I want to interview him..

4. The mother looked _________ (angry) at her naughty daughter.

5. What an _________ (enjoy) journey they had the day before yesterday!