Use the correct form of the word given to complete each sentence

Use the correct form of the word given to complete each sentence.
1. They were reunited after a ...................... of more than 20 years. (separate)
2. Everyone was very.......................................to me. (friend)
3. He plays an...............................part in politics. (act)
4. He has been the BBC's political...................................for many years. (correspond)
5. We were most ..............................by the beauty of the landscape. (impress)