Mr Minh is admired. He dedicates all his life to protecting environment. (since)

1.mr Minh is admired.He dedicates all his life to protecting environment.(since)
2.Give me a ring.You'll hear some news(when)
3.The TV program will end.I'll do my homeworks.(after)
4.I'll go to work.I'll have a bath(before)
5.She 'll in Paris.She'll visit friends.(while)
6.The water is highly polluted.We cannot swim in this part of the river.(because)