Mayday is an emergency procedure signaling word used mostly as a distress signal during radio communication. It is used to signal a life-threatening emergency mostly by aviators and mariners.
Someone may appear strong but has a weak spot.
One would be likely to hear the phrase 97bobo in certain restaurants. It may be a reference to an item on the menu. The cashier may relate this phrase to the chef.
joyeuse fête du Travail is the phrase in French. It says happy May day in french.
How's it going? Or someone may be talking about the sky.
You may be thinking of the phrase "apple of my eye" which means something or someone cherished above others.
A person may need cover for a single day if they have borrowed a car from someone whose own insurance policy does not cover this. Similarly, it could be taken out by someone who has lent a car to someone else.
May 19
The phrase you are thinking of is "Mayday". In early years of aviation this was a cry for help. It is a corruption of the French word 'maidez', help me.
i buy someone a cake if it's her/his special day like birthday, anniversary and etc or just a food trip or may as a treat to a friend.
No, it is not an adverb. Crossed is a verb form. It may form a participial phrase which would likely be an adjective phrase.
"May a good day be with you," which I suppose also translates to, in a way, "Have a nice day."
Unable to find anything about sending hearts to someone on Christmas but as per my understanding goes, it may be because heart symbolizes love and peace and hence would be a good idea to spread love and peace to someone on such auspicious day.