I'm working through a exercise on fixing comma splices. I'm posting below the finished sentences. Could someone take a look at them and tell me which sentences are wrong?

Thank you,
Randy

1. At one time the walls in many Philadelphia neighborhoods were covered with graffiti; however, they are covered with murals today.
2. Since 1984 a city-sponsored program has been teaming young graffiti writers with professional artists. The result is the creation of over a thousand works of public art.
3. The murals are large, they are colorful, and they are 99 percent graffiti-free.
4. A forty-foot-tall mural of Julius (“Dr. J.”) Erving has become a local landmark; however, even Dr. J. himself brings friends by to see it.
5. The theory behind the program is that graffiti writers, being inherently artistic, will not deface a work of art they respect. So far the theory holds.

This message has been edited. Last edited by: Randy,

Hello Randy,

All comma splices have been successfully eliminated.

I have some doubts about the use of "however" in #1 and #4; in #4, there does not seem to be a sufficiently constrastive sense to justify the "however", while in #1, you might want to think about a non-semi-colonic structure.

Best wishes,

MrP