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In some countries Mother's Day is a holiday celebrated(被庆祝的) on the second Sunday in May. It is a day when children give their mothers cards, gifts(礼物) and flowers. On that day, many children go out and buy a bunch of beautiful flowers. After their mothers get up, they will say "Happy Mother's Day!" and give their mothers the flowers. Mothers will be very happy and say" How wonderful these flowers are! Thank you!" Then the children are going to do all the housework for their mothers, and let them take a rest for a day.