Match up the words which are similar in meaning: purpose, in the sphere of, to make, important, aim, proper, common,

Purpose- aimin the sphere of - in the field ofto make - to produceimportant - significantproper - suitablecommon - standardto work out - to developto vary - to differtime - periodray - beamto define - to determineto show - to demonstratemethod - technique,device – instrumentto operate - to function