Which word or phrase can be used to express “ properly”?

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• She has a very good towards work ， and is always making an effort to get things done properly .
• When having an interview, we need to arrive on time, look professional and dress properly. ( )
• How to properly say sorry and thanks in case of the delay?
• How to properly ask passengers to turn off mobile phone for take-off?
• The machine does not seem to work properly. I think it needs (repair)（）.