For each of the following clues, what is a synonym that contains the letters in the () consecutively?
1. A talk (LEC)
2. A challenge between 2 or more people (CON)
3. To sign up (REG)
4. An organization established to help the needy (TY)
5. To talk (CATE)
6. In charge (SPON)
7. Place (CA)
Today's brain teaser courtesy of Braingle.com.