What Are Filler Words?
Filler words are words (and phrases) that are used to fill silence when you’re speaking. They’re words that don’t add any real value to the sentence. They simply keep you going while you come up with the rest of your sentence.
http://www.fluentu.com/blog/english/english-filler-words/
Well… It’s a very hard question for me to answer.
I really have nothing to say about your question, however, I will try.
It’s a very difficult question!!! Anyway I’ll do my best.
This question is too difficult (for me to answer)
Let me see~ the question is easy but I don’t usually think about it.
I’ve never thought about this topic.
Well…give me a minute…(to think about it)
Well…give me a second…(to think about it)