Fill in the Blanks (Reading & Writing)

Clockmaking reached extraordinary levels of —precisionprecisepreciselyprecisian in eighteenth-century Europe, as craftsmen competed to produce ever more accurate timepieces. The invention of the marine chronometer, in particular, —offeredsuggestedproposedrecommended a solution to the long-standing problem of determining longitude at sea. Many of these early clocks remain remarkably —functionalfunctioningfunctionalityfunctionalist today, still keeping time after centuries of use.