Origin of Mother's Day goes 【小题1】 to the era of ancient Greek and Romans. But the roots of Mother's Day history can also be traced in UK 【小题2】 a Mothering Sunday was celebrated much before the festival saw the light of the day in US. 【小题3】 , the celebration of the festival as it is seen today is【小题4】 recent phenomenon and not even a hundred years old. Thanks 【小题5】 the hard work of the pioneering women of 【小题6】 times, Julia Ward Howe and Anna Jarvis that the day came into 【小题7】 (exist). Today the festival of Mothers day 【小题8】 (celebrate) across 46 countries (though on different dates) and is a hugely popular affair. Millions of people across the globe take the day as an opportunity 【小题9】 (honor) their mothers, thank them for their efforts in giving them life, 【小题10】 (raise) them and being their constant support and well wisher.back
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(答案→)back
解析：
【小题1】考察“go back to（追溯到……）”。
【小题2】这是一个定语从句，where代替先行词UK，在从句中作地点状语。
【小题3】前面说到母亲节的历史起源可以追溯到很久以前，后面又说现在我们看到的对母亲节的庆祝是近代的一种现象而并非有100年那么久的历史，这是转折关系。
【小题4】对这个节日的庆祝应该是近代现象中的一种。
【小题5】考察“thanks to（多亏……）”。
【小题6】指代前面的“pioneering women”。
【小题7】考察“e into existence（成立，建立）”。
【小题8】母亲节应该是被人庆祝，所以要用被动语态。
【小题9】表目的。
【小题10】与前面的“giving them life”和后面的“being their constant support and well wisher”短语并列，动词形式应一致。