Read the following text and fill in each gap with a suitable word based on the information of the text.

May Day or International Workers' Day is observed on May 1 all over the world today to commemorate the historical struggle and sacrifices of the working people to establish an eight-hour workday. It is a public holiday in almost all the countries of the world.

Since the Industrial Revolution in the 18th and 19th centuries in Europe and the US, the workers in mills and factories had been working a long shift, fourteen or ever more hours a day.

On May 1 in 1886, inspired by the trade unions, half of the workers at the McCormick Harvester Machine Company in Chicago went on strike demanding an eight-hour workday. Two days later, a workers' rally was held near the McCormick Harvester Machine Company and about 6000 workers joined it. The rally was addressed by the labour leaders. They urged the workers to stand together, to go on with their struggle and not to give in to their bosses. Just at this moment, some strike-breakers started leaving the meeting place. The strikers went down the street to bring them back. Suddenly, about 200 policemen attacked them with clubs and revolvers. One striker was killed instantly, five or six others were seriously wounded and many of them were badly injured.

The events of May 1, 1886 is a reminder that workers will continue to be exploited until they stand up and speak out to gain better working conditions, better pay, and better lives.

May Day, an International Workers Day, (a) _____ on May 1 all over the world. The day is observed with a view to (b) ______ honour to the struggle and sacrifice of the workers. The 1ª May is a (c) _____ holiday in almost all the countries of the world. The events of May 1, 1886 (d) ______ the workers that they will continue to be exploited unless their struggle (e) _______ on together.