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proper
adj
improper
adj
improper
adj
properly
adv
properly
adv
properness
n
properness
n
例
Wearing formal attire is proper for a business meeting.
Arriving on time is proper etiquette for a job interview.
Following safety guidelines is proper when handling hazardous materials.
Using the correct tools is proper for completing the task efficiently.
It's proper to use polite language when speaking to elders.