Question

Common errors to avoid are _____. speaking too softly
not looking at the audience
smiling
wandering from the subject
knowing all the facts
being disorganized
using conjectures or opinions
not supported by facts or specifics
trite expressions

Answer 1

I think there are two answers the first answer is: Being disorganized and second answer is: not supported by facts 

Answer 2

These are all of the correct ones:

*speaking too softly

*not looking at the audience

*wandering from the subject

*being disorganized

*using conjectures or opinions not supported by facts or specifics

*trite expressions