用and,but或so合并句子。

用and,but或so合并句子。
1.I have an e-friend.he is from the Uk.
2.Tomorrow is ok.i won't be free until lunchtime.
3.sally felt ill.shr did not go to the concert last night.
4.smoking is a bad hadit.it can be dangerous to your health.
5.My leg still hurt.i went to see a doctor.