The correct answer is: I moved it slowly - very, very, slowly.
Explanation
Suspense is a term to refer to the expectation about the resolution of a situation causing tension or impatient expectation of the viewer or reader. According to the above, it can be inferred that the sentence "I moved it slowly- very, very slowly" because it describes an action that is being performed slowly and is described in great detail causing tension in the reader as the reader wanders wether the protagonist of the story will be discovered as he tries to enter to the room. According to the above, the correct answer is: I moved it slowly - very, very, slowly.
When talking about things that we did in the past but don't do now we can use the expression used to. The negative form, to talk about things which we didn't do in the past but do now, is didn't use to.
Used to and didn't use to are only used to talk about past habits. There is no present form. To talk about present habits we can use the present simple. When using these structures there are often two parts to the sentence, something about the past and something about the present.
I believe it would be broaden. Broaden can mean several different things. However if it is talking about a specific art, like musical arts then it would be art. Hope this helps!