Don't worry Bonnie - you are going through training to learn, which is the right thing to do. If you knew everything, you would be TEACHING the class, not attending it!
Jackie is a big anticipator also. If we do a series of commands (ie. SIT, followed by DOWN) more than twice, she starts thinking too far ahead & DOWNS when I say SIT. It gives everyone in class quite a laugh.
Jackie just finished the CGC/TDI class at our school, but couldn't take the test because they gave it last week, and I was away. So we plan to keep practicing for the next one!