Do you know  Mother's Day is? Yes, it's on the  (two) Sunday in May. So Mother's Day is  (come) this year. People celebrate Mother's Day  North America. Now it's also celebrated in many other countries. It's   day to thank mothers. On that day mothers usually get  (flower) and cards. On the cards children often write " (Thank), Mom", "To the best mother in the world","Best wishes for Mother's Day" and so on. Children also give gifts to  (they) mothers or the family goes out  tries to do something nice for the mother. Of course, pink carnation(康乃馨)is the symbol  mother's love and Mother's Day.