Are these sentences of mine using the underlined words correct?

Are these sentences using the underlined words correct? Please help me.

1. Terry used catchy slide presentations when she conducted a seminar-workshop on scriptwriting.
2. The program started at 7:30 a.m. with an opening prayer followed by the singing of the Bhutanese national anthem.
3. HIV/AIDS spreads primarily by having unprotected sex with an infected person, having other sexually transmitted diseases (STDs), having multiple partners, sharing rinse water, needles, syringes, or other equipment used to prepare illicit drugs for injection, or being born to an infected mother.
4. With in-depth PowerPoint presentations as her instructional tools, Mrs. Andrews conducted a seminar on recycling.
5. A seminar anchored on the theme “Fighting Terrorism: Fighting for Life” was held on the ground floor of our city hall.