For example:

‘It is perfectly acceptable to pause at points during your presentation; you do not have to speak continuously. Do not let brief silences rattle you. Determine appropriate ”stopping points,” and build pauses into the body of the presentation. Appropriately placed pauses can be quite dramatic and effective in getting the audience’s attention.’

http://www.brown.edu/Departments/Italian_Studies/dweb/pedagogy/class-pres-skills.shtml

Compare:

Eliminating Verbal Pauses

http://bluecigar.org/?s=verbal&searchsubmit=Find

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These words are also sometimes called “filler words” –

http://en.wikipedia.org/wiki/Filler_(linguistics)

http://www.businessknowhow.com/growth/presentscs.htm

“and she said”

“he drank about fifty glasses of water”

not sure what your question is