さあ、始めましょう。

come; come now; come along; go on; hurry up; well; who knows; I don't know...; uh; hmm; well now; let's see; there we go; all right; about that; you see

to start; to begin; to commence; to initiate; to originate; to open (e.g. a store); to start up; to establish (business. etc.); to start ...; to begin to ...