阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
International Workers’ Day,also【小题1】 (know) as May Day, is celebrated on the first day in May. More than eighty countries【小题2】(celebrate) this festival since 1889. People may know that International Workers’ Day is about having a rest on that day,most of 【小题3】don’t know the story behind it.
In the late 18th century,in order to make more money, the cruel capitalists forced【小题4】 (employ) to work all day,but only paid low salaries. Due to the unfair payment,the workers knew that they had to stand up for their rights,or all of them would die young. Then the workers started to go on strike, and demanded that the 【小题5】(reason) working hours should be 8 hours a day.【小题6】 ,the capitalists did not pay attention to the workers’ demands. The workers had to fight for rights for【小题7】 (they). On May 1st,1886,the United States’ and Canada’s trade unions 【小题8】(get) together to start the biggest strike. After that day, the law passed the rules that the workers’ working hours would be 8 hours per day. International Workers’ Day aims to remember the spirit of bravery and show our respect【小题9】 the former workers. Because they have made a great 【小题10】 (contribute) to today’s happiness.